8x14FT Walk-in Greenhouse with Hygrometer,Polycarbonate Green House with UV Protection, Heavy Duty Greenhouse with Windproof Aluminum Frame, Roof Vent & Quick-Install Design
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Availability:
Only 2 left in stock, order soon!
Arrives
Jul 24 – Jul 28
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Size: 8x14 FT with thermometers
Features
- Durable & Stable Structure-This polycarbonate greenhouse is built with a high-quality reinforced aluminum alloy frame and strengthened corners for excellent stability. Designed to handle tough outdoor conditions like strong winds, heavy rain, and snow. For added strength, you can seal the panel gaps with silicone (not included), making it a reliable green house for year-round use
- UV-Resistant Polycarbonate Panels-This polycarbonate greenhouse features 4mm thick, 580g double-wall panels that are both clear and impact-resistant. They let in plenty of light while blocking harmful UV rayshelping to maintain a stable interior temperature and creating an ideal environment for healthy plant growth in your green house
- Easy Assembly-Our greenhouses for outdoors come with clearly labeled parts, detailed instructions, and the necessary tools for quick setup. With a helping hand and by following the manual, you can easily build a sturdy green house for your backyard garden
- Great Ventilation & Spacious Design-This greenhouse includes adjustable roof vents and a lockable door to promote airflow and maintain optimal temperature. The roomy interior offers plenty of space for arranging plants, ensuring they grow in a well-ventilated and organized setting
- All-Season Protection-Designed for year-round use, this outdoor greenhouse shields plants from harsh elements. Its UV protection panels and ventilation system help regulate temperature, while the heavy-duty frame protects your garden from wind, snow, and rain
Description
T-Shape Green House 6x4 FT Greenhouse 6x8 FT Greenhouse 8x10 FT Greenhouse 10x12 FT Greenhouse At Sylviera, we believe everyone should have the opportunity to cultivate their own green oasis at home. We understand that every garden is unique, so we offer a variety of sizes and designs to meet different needs. Whether you're growing vegetables, flowers, or herbs, our greenhouses fit perfectly into any space and support all your planting ambitions. At Sylviera, customer is our top priority. We are committed to providing exceptional after-sales service, ensuring you have a good experience from purchase to setup. To provide garden enthusiasts and outdoor growers with high-quality greenhouses that allow them to extend their growing season. Each greenhouse is crafted to create the ideal growing environment, offering durability and resistance to various weather conditions.
Color: Black
Brand: Sylviera
Product Dimensions: 166"L x 97"W x 81"H
Cover Material: Polycarbonate (PC)
Frame Material: Aluminum
Brand Name: Sylviera
Manufacturer: Sylviera
UPC: 783430957761
Manufacturer Part Number: 1
Model Number: 1
Unit Count: 685 Count
Item Dimensions L x W x H: 166"L x 97"W x 81"H
Size: 8x14 FT with thermometers
Number Of Vents: 2
Indoor Outdoor Usage: Outdoor
Special Features: Easy to Install, Quick Assemble Design, Excellent Ventilation and Roomy Layout, Heavy Duty, High Durability and Stable Structure, UV-Resistant Polycarbonate Panels
Cover Material: Polycarbonate (PC)
Frame Material: Aluminum
Color: Black
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jul 24 – Jul 28
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 6x4 FT with thermometers
I’m really happy with this greenhouse so far! The 6x4FT size is perfect for a backyard garden because it gives plenty of room for pots, seed trays, herbs, and flowers without taking up too much space. The heavy-duty aluminum frame feels sturdy and much more durable than the cheaper plastic greenhouses I’ve tried before. The polycarbonate panels do a great job of keeping the inside warm and maintaining a stable temperature, especially during cooler nights. The included hygrometer is also a really nice bonus for tracking humidity and temperature levels. I also love the vent window since it improves airflow and helps keep the greenhouse from overheating on sunny days. Assembly does take a little time, but the instructions are manageable if you go step by step. Once everything is put together, it feels secure and has held up well against wind and rain. The waterproof design has done a great job protecting my plants during storms. One important thing to know: make sure you remove the protective film from both sides of the panels before assembling. The instructions don’t clearly mention it, and honestly it barely even looks like there’s a film on them. As you can probably tell from my pictures, I completely forgot to remove mine lol. Overall, this is a great greenhouse for both beginners and experienced gardeners looking for a sturdy, reliable option at a good price. Definitely worth it for protecting plants and extending the growing season!
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Reviewed in the United States on May 25, 2026 by Leah Barlow
Size: 8x14 FT with thermometers
This is a very nice little greenhouse for the money. Not perfect , but for the money, pretty nice. I ordered the 8x14 and kind of wish I had ordered the 10x12. The main reason for that is the 10x12 is taller. For the 8x14, I ended up framing pressure treated 2x6s on end for the greenhouse to sit on for an additional 11 inches of height. This also means building steps on the inside and outside at the door. Which I'll get to eventually. So the bit extra for the 10x12 greenhouse is absolutely worth it, because it cost me more in materials to raise it and build steps than the price difference between them. With the additional 11in in height, I'm able to stand comfortably at the edge of the roof (lowest point), and I'm 5'10". And that's including several inches of mulch on the floor. Having said that, I'm very pleased with it. It's fairly sturdy and feels like it could withstand a storm. Maybe not a midwestern storm, but here in WV, I think it'll do fine. The window panes are a bit flemsy and cheap feeling, but again, for the money, I'm pretty happy with it. And, to be honest, I think the way they designed their panels will likely offer more insulation than solid poly panels or glass. So, the way the windows are designed does seem to offer functionality, even if they do feel a bit cheap. Also, the roof vents need a rubber band to keep the prop arms attached. The wind picks them up, unhooks them, and then they fall closed. So I've got rubber bands holding the prop arm onto the screw that they use to hook it. Now, some have said the instructions are confusing and it takes forever to build. Well, sort of. Some things could certainly be depicted better. But if you take your time and study each drawing closely, and study the parts closely to make sure you're installing it correctly, you'll be fine. The issues are mainly in two areas. The central beam that makes up the roof centerline could have been drawn a little better. And the last few pages of instructions have some errors, such as not listing the quantity of parts correctly and not noting the parts in the drawing correctly. It's easy enough to figure out, but it was a little confusing at first. Just think through it. It makes sense as long as you're aware there's some mistakes in the instructions and can sort of think logically about where things should go and how they should attach. As far as issues, the way the panels slide in can be a bit tricky. It takes two people. One inside and one outside. If a panel feels like it isn't fitting, or if the beams between the panels aren't connecting or have a gap, start loosening screws on the frame to let everything settle where it wants to instead of forcing it. And some of the window panels had crushed or bent edges which made things difficult. But they weren't so damaged that it was worth returning. For the most part you can't even tell, it just made getting the panels fit into place a bit more difficult. Also, the door frame isn't perfectly square. I tried adjusting locations of the frame with screws, but couldn't get the door squared. Probably the base not being perfectly level or square, but some sort of adjustment or shims around the door would have been nice. It does close though so not a big deal. It just rubs in the top right corner when it closes. Time to build... Well, that depends on how many mistakes you make. For the most part, as long as you're paying attention and studying the drawings closely, it pretty much only goes together one way and it's obvious when you have the wrong part or putting something in the wrong direction. That said, I did make a few mistakes that cost me some time. Like on the ridge beam at the top, I didn't use the metal plates under the bolts and nuts at the joints because I didn't notice them in the drawing, and getting the screws back out without that plate in there is difficult. That cost me 2 hrs. Mainly because I had to drill out a couple bolts and go to the hardware store for more. So study the drawings closely 😂 But, overall, even including 2-3 hours worth of mistakes, and some breaks because it was hot, etc, I started at 9am, and finished at 7pm. And that's just the greenhouse, not any of the leveling of the ground, or building a base to elevate it, or any of that. All that was done on the previous weekend. So, expect a full day of building just the greenhouse, not including any time to prepare the site to build on. Then of course time to shovel in mulch or whatever you're going to use for a floor. Plus plumbing if you choose to have it. Another note, carefully use a razor blade to remove the film from the roof vent window panels. The frames are riveted so you can't take it apart, so when you peel the film off it just tears at the edges leaving torn bits stuck under the metal frame. Run a razor blade down the edges of the metal frame, then peel off the film. Just don't cut the window. For space, 8x14 isn't as big as you'd think it is. It's plenty for what we're going to use it for, but I think 10x14 would be a better size. Actually, 10x14 with an 8 or 9 ft roof peak would be ideal. Things you'll need... Well, I had to dig a 100ft trench to lay a pex water line to have a garden hose faucet, water timer, water filters, misting nozzle system, etc. And to use it year round, we're going to be adding a heat pump. Which will mean another 100ft trench for laying a 10/2 cable w/ conduit to get power to the heat pump. But it does need cooled in the summer, and heated in the winter. Obviously that depends on where you live, but in WV our summers are in the 90s and winters are usually mild to cold (highs in the 20s to 40s, and lows in the teens, with occasional extreme lows of -30° (polar vortex). All in all, very pleased with the purchase. If I was going to do it again, I might actually save up and frame my own out of timber and use glass windows. Maybe a brick wall at the end. Just for the aesthetic of it. But the cost would be massively more expensive. So again, for the money, this is fantastic. If you're on a budget and a the expense of a scratch build is out of reach, whether because of money or lack of skill in building from-scratch construction, or just don't want to devote a bunch of money to it, this is a very reasonably priced option that you'll be pleased with. It doesn't take much skill, just study each drawing closely and take your time. Do that and you'll be fine. It is actually pretty logically designed so even in the places where the drawings don't make much sense or there's errors in the drawings, it still doesn't take much to figure out what needs done. Forgive the mess in the photos. Haven't cleaned up the trash, or the tools, or finished landscaping around the greenhouse yet. I was exhausted when I finished it, and my wife and I tore up a pretty decent sized section of our yard leveling the site and digging the trench. (well, more of a hill than a yard) But it's built. And I hurt everywhere 😂 Update: I just ordered a 12" solar powered exhaust fan. This morning it was 68° outside at 10am, and due to our property being on the West side of a small mountain, the sun didn't even start hitting the greenhouse until about 9am, but by 10am the greenhouse was already 93°. That was with the roof vents open. And our plants need it to stay under 85°. I propped the door open which kept it under 90° during the hot part of the day, but it definitely needs an exhaust fan. And probably a 70% shade tarp and an AC in the summer. It collects heat very well. I was worried that just having plastic windows without much sealing around them that there'd be an issue with heat escaping. That does not appear to be the case. I've also ordered a 1500w greenhouse heater for winter, so I'll update this review again after I see how it does during the cold months. But my guess is that it won't take much heating to keep it above 40°
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Reviewed in the United States on September 18, 2025 by JM
Size: 8x10 FT with thermometers
What an absolute piece of crap. I have been trying to put this thing together for 2 days and I have never been so frustrated in my 39 years of life. Cheaply made, parts of the instructions are missing (when do I secure these pieces and with what screws, am I supposed to guess), things are falling apart and don't fit into place properly, the beams act like they are too short and no matter what way you twist the lock it doesnt lock into place. There are gaps where there shouldn't be and the edges for the panels are all bent and delaminated. I finished installing the panels on one side of the roof and when I tried to start the other side it knocked down the panels on the finished side, bent the beam and ripped through one of the screw holes so I can no longer use that piece. I legitimately can not complete this project now due to the damaged piece and all the other issues that keep it from going together properly so I am out almost $450 and will now have to spend MORE money to buy a different green house while my vegetable/ fruit plants die bc I can't plant them on time. I don't know how anyone had given this thing a positive review unless something had changed recently to make it such horrible quality. I'm furious and now my little boy is disappointed bc he wanted to be able to have fruits and vegetables this year and have a place to use for his butterflies that will be here any day which makes me even more mad. Ready to set it on fire.
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Reviewed in the United States on June 27, 2026 by Rebecca
Size: 8x10 FT with thermometers
It was relatively easy to put together with 2 people but took a few days working a couple hours at a time. We found some old bricks buried on our property so of course we built the floor first. We used locktight on everything to make it sturdier, siliconed the entire thing as well. You gotta make sure everything is aligned perfectly for it to fit together nicely. We also screwed it right into the 2x4 so it doesn't go anywhere. I think its a great greenhouse and I cant wait to see how well it performs. I love that it comes with the thermometer that connects to an app so I can keep an eye on the environment while away. 4 stars because without the lock tight and silicone, it wouldn't last as long. I will come back after a few months to update this review!
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Reviewed in the United States on April 3, 2026 by Christina
Size: 8x10 FT with thermometers
I’m so glad I picked up this 8×10 greenhouse for my backyard—total bang for the buck with just a few tiny, non-annoying quirks. Shoutout to customer service too! They shot back my messages super fast with really detailed answers and fixed all my questions right away. Let’s start with the build itself. The aluminum frame feels rock solid, holds up great against our regular wind and rain around here. I never stress about the whole thing wobbling or caving in on blustery days. The twin-wall polycarbonate sheets do feel a little thin when you touch ’em, but wow, their insulation crushes those cheap single plastic tarps—such a nice surprise. I saw other reviewers suggest wrapping rubber bands around the roof vent support arms, so I gave it a shot, and it works like a charm, 10/10 recommend. No more wind yanking those props loose and slamming the vents shut on their own. This 8×10 footprint is perfect for casual backyard gardeners. Tons of room for starting seeds, growing veggies and small flowers. It doesn’t hog a ton of yard space at all, fits right in a standard suburban backyard without feeling cramped. If you’re working with a tighter budget and don’t have the skills to build a custom wooden glass greenhouse from scratch, this prefab kit is an unbeatable affordable option. Assembly isn’t rocket science—just take your time and follow the manual closely, and you’ll get it put together smooth. Overall, I couldn’t be happier with this buy. It checks every box for my gardening setup and blows away other greenhouses in the same price range. Would absolutely recommend this to any hobby gardener out there!
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Reviewed in the United States on June 17, 2026 by Sabrina M
Size: 6x4 FT with thermometers
I wanted to surprise my mom and get a better greenhouse than what we had tried to use last year, I wanted something a lot more durable than the cheap one she had originally gotten. So I was looking at ones on here and I saw this one and for the price, I truly couldn’t pass it up! It’s honestly worth so much more than what the price point is, I’m truly blown away by the quality of it! It’s super sturdy and does come with support bars for inside to help keep it sturdy especially in winds or when opening and closing the door. We’ve had a lot of windy days lately here in Colorado, but this greenhouse has taken it like a beast! The instructions were pretty simple and straight forward, being easy to follow. It also included detailed pictures of each step to make it that much easier! Once it’s all assembled, it’s super easy to use, even the vent window up top! I love how it comes with a hygrometer, but it doesn’t come with batteries so make sure to grab some. I haven’t had a chance to grab batteries for that just yet so I can’t speak on that part of it unfortunately. But overall, I’m truly very pleased with this greenhouse! It has quite a bit of room inside for plants and even some shelves for more plants if need be! It does a great job at protecting any plants and my husband’s jalepenos that are currently growing in there, are absolutely thriving! I can’t wait to get some more plants in there!
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Reviewed in the United States on July 7, 2026 by Rachel Dean
Size: 6x4 FT with thermometers
This greenhouse is really well-made and sturdy overall. I noticed a bunch of negative reviews saying it feels flimsy and gets blown around easily, and after reading those posts I figured out why. Most people set it up out in wide open yard space with nothing blocking the wind at all. No surprise it gets damaged when strong gusts hit it directly. The instruction manual clearly states it’s meant to be installed against a solid exterior wall for extra support. I followed that tip and mounted it right up against the side of my house, where the building blocks most of the harsh wind. With this setup, I’m confident it’ll hold up great and last for many years to come. Definitely worth the purchase if you install it the right way!
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Reviewed in the United States on July 7, 2026 by Bills Mafia
Size: 6x4 FT with thermometers
Updated review as of 12/8/25: The seller contacted me after seeing the issues I was having which was greatly appreciated. They apologized for the issues and offered a few differ g options to mitigate what was wrong. Having a seller take ownership of their product and make things right is extremely rare these days so it means a lot. They didn’t have to offer a fix at all yet they chose to. That doesn’t for unnoticed. Great communication. Would order from this seller again based on this interaction. Updated review as of 11/11/25: Not very sturdy in storm/wind related weather. Rain has been fine with this shed, even in really bad rainfall. The issue we’ve noticed is wind. We have had two major wind events over the past few months and each time, we basically had to rebuild this shed which is not so easy. The first wind storm, all the clear pieces came out, like allllll of them. We thought no biggy, we’ll just slide them back in. Nope! You can’t do that and we had to take everything off and rebuild this thing. We just had another windy weekend (not even a storm, just wind) and 4 of the clear pieces were thrown all around our yard. I’m not sure how many more may come off and I don’t know if I have it in me to rebuild this thing again and again. I’m def disappointed that it can’t even withstand some windy days. I think it’s because the tracks these go in are not very deep. They just about fit, so any movement and they pop right out. I also wish this was created with a way to slide the tracks in and out more easily. It hasn’t even snowed yet and we’ve rebuilt this twice now. I can’t imagine it’ll do well in the snow and if it doesn’t, we’re tossing it. Not worth the hassle so fingers crossed! Initial review: Overall pleased, but wouldnt really consider it a quick-installation. We were looking for another shed to hold some lawn equipment and my garden supplies but instead of a bland, ugly shed we opted for this greenhouse. It looked better and went with our aesthetic. It’s def super cute and glad we purchased overall. Installation: Idk if we had an off day but it took my husband and I like 3hrs to put the 4x6 one together which I feel like is alot. We build stuff all the time too but there are alot of pieces, clear backings to strip off, holes that don’t line up, and the directions are not the most clear at times. We put many things on wrong thinking it was right only to realize it several steps later, having us back track. Most things were labeled but many were not so was also aggravating. It took 5hrs overall but we had to build and level a base first. Durability: it actually seems pretty sturdy metal wise. They give you anchor plates so you can drill it down which is good for any storms but I do feel the actual sides aren’t conducive to having any stress put on them. You def will need to put up a stand alone shelving system or keep things away from the sides or you risk pushing the sides out or denting/bending them. How it holds up during rain or snow is yet to be determined. I truly hope the top portions don’t bend with the weight of slight snow. Size: we did the 4x6 because we wanted just a-little something for extra storage so I think this works fine for us. The doorway is on the skinnier and shorter side. I’m only 4’11” and I barely make it through without ducking. Pros: very stylish Gets very hot so good for plants Nice door latching mechanism I like the open air hatch Decent space Cons: -Not as easy to put together as you’d think -Some things don’t line up and left gaps -Small and short entryway -Sides won’t take on much stress so can’t have free standing items or lean anything in my opinion -Both side of the panes have protective coverings. One is white and one is clear you can almost miss it. Annoying to take these off of every piece. -I actually wish there was no metal bottom where the door is and it was just open. If you need to bring things in here heavy then you have to pick it up to get it over the framing which might be difficult. Bottom line: for the price I think this was a great alternative for us despite the cons. I love the look and think it’s worth the try.
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Reviewed in the United States on July 24, 2025 by laura fileccia