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Zinus

ZINUS SmartBase Heavy Duty Mattress Foundation / 18 Inch Metal Platform Bed Frame / No Box Spring Needed / Sturdy Steel Frame / Underbed Storage, King, Black

    • Based on 42,273 reviews
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, May 18
Order within 7 hours and 47 minutes
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Size: King


Style: 18"


Features

  • OUR STRONGER MATTRESS SUPPORT Strong may be an understatement; this all-in-one foundation, made with heavy duty steel, can support up to 3000 lbs; all while doing the jobs of both your box spring and frame and giving you back some underbed clearance space too
  • NO BOX SPRING NEEDED - Platform is engineered with heavy gauge steel wires that replace your box spring, allowing you to rest your latex, memory foam or spring mattress directly on top of the foundation
  • UNDERBED STORAGE Clearance space under the frame provides valuable storage room for extra odds and ends; improved design features recessed legs for safety
  • QUICK, TOOL-FREE ASSEMBLY - Shipped in one box and requires no tools for assembly; simply unfold and rest your mattress on top; twin and twin XL sizes support a maximum weight capacity of 1500 lbs, while all other sizes can support up to 3000 lbs
  • Worry-free 5 year lid warranty included; mattress sold separately

Description

The Heavy Duty SmartBase is a mattress foundation even stronger than your Monday morning coffee. Engineered precisely with heavy duty steel and unwavering support from multiple points of contact with the floor, this frame is built tough enough to support up to 3000 lbs of evenly distributed weight. With a frame this sturdy, you can bet that your mattress will be optimally supported for the long haul with absolutely no sagging. Its metal platform effortlessly supports your foam, spring or latex mattress without the need for a box spring. Built with valuable underbed space for extra storage, this handy frame also includes practical features like recessed legs and plastic caps to protect your floors. And although the last thing you’d expect from a frame this tough and functional is tool-free assembly, that (and a 5-year worry-free warranty, no less) is exactly what it comes with. Easily unfold the base, extend the legs, use the easy locking system to secure everything in place and voila! You’ve got a substantial mattress frame in less time than it takes to brew that pot of coffee.

Size: King


Product Dimensions: 80"L x 76"W x 18"H


Special Feature: Storage


Color: Black


Finish Type: Steel


Size: King


Product Dimensions: 80"L x 76"W x 18"H


Special Feature: Storage


Color: Black


Finish Type: Steel


Included Components: Tools, SmartBase, Instruction Manual


Brand: Zinus


Furniture Finish: Alloy Steel


Product Care Instructions: Wipe with Dry Cloth


Assembly Required: Yes


Item Weight: 41 pounds


Manufacturer: Zinus


Country of Origin: USA


Item model number: OLB-SB13-18K


Is Discontinued By Manufacturer: No


Date First Available: November 14, 2015


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 18

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.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • This is the best frame I’ve ever had
Size: Queen Style: 18"
I really did not want a metal frame, but I’ll never go back after this one. It is so sturdy and silent. My partner and I weigh an equivalent of over 500lbs and it holds up. It’s silent (unless some screws come loose, which are so easy to tighten and maintain). Assembly took some time because of all the different pieces, but was easy. One person can put it together. We got the really tall one, and it took some getting used to but I love being so far above our floor. Storage space is excellent. We sleep so well on this frame. ... show more
Reviewed in the United States on October 31, 2023 by Rachel Ramirez
    • Great product
Size: Full Style: 18"
Great to use with foldable mattress when camping so we aren't sleeping on the ground. Easy to assemble and very sturdy. Nice to have storage underneath also so tent/cabin not so crowded. Inexpensive for extra bed in home also.
Reviewed in the United States on October 18, 2023 by Kimberly M
    • Updated: Full review two years later! (Preliminary Review: Unboxing and set-up)
Size: Full Style: 16"
I will write a full review of this bed frame after I have used it for a while but wanted to give a preliminary review first. I've had it for about a month before setting it up (waiting to get a new mattress and get rid of my futon), so it's been in the box which was on the large side but was able to tuck it away in my kitchen for a few weeks. I live on the third floor of an apartment building and while the box was a bit bulky and heavy, I was able to get it up to my apartment by myself with no problem. I'm a big girl with a not-so-great back, but it was definitely manageable. Having forgotten anything I read in the reviews about assembly, I was expecting a cumbersome set-up job with a lot of little parts and pieces and metal clanging around as I jostled this frame around my tiny little one-room apartment. I was pleasantly surprised to find that the frame consists of two separate pieces that fold out, and are then joined together by two screws in the middle. THAT IS IT!! Putting it all together took me about 20 minutes. Probably would have been less if I had more room and wasn't having to rearrange other furniture almost every step of the way. I have my new mattress set-up on the frame and expanding now (I got a Tuft and Needle original mattress which is a little longer than the frame, so not sure if that's a frame issue or mattress issue, but hardly noticeable) and was impressed with how easy it was to move the frame during the unboxing of the mattress and how lightweight it is. I am honestly a little apprehensive about the two pieces of the frame staying together with two screws as the butterfly bolts don't screw as tightly as I would like. I anticipate maybe having to find a washer or nut or something else to just make sure the fastener doesn't come off, but that's super easy so I'm not too worried about it. I did really appreciate that the hardware (two long screws and two butterfly bolts) came in a package together so it was easy to set them aside and not have to worry about them flying around. Oh! I also really appreciate that the frame came with two non-slip pads that are often used for carpets. That will hopefully help prevent the mattress from slipping off the frame. The storage capacity underneath this frame is AMAZING! Because there are two braces in the middle of each section, the storage underneath is in two sections divided horizontally but I can fit so much stuff under just one section because of the height which I am loving in my small apartment. The stuff from under my futon is now under ONE section of this frame, leaving me so much more room to store things that have been getting in the way. I will give it a full review after sleeping on it for about a week, but I'm optimistic that I will be highly satisfied! ****UPDATED REVIEW**** Two years later I am back to finally update this review! And two years later I am still 100% satisfied with this bed frame! When I moved last summer (Aug. 2020), taking this apart on moving day was a snap and it took me five minutes to set it up at my new place. I had previously been worried about the two screws joining the sections coming loose but that has been a non-issue in the last two years. I eventually added a bed skirt to help conceal the totes and things I have underneath, but the storage space has been such a game-changer for me, even when I moved to a bigger apartment. The frame is super quiet and holds up with some company in the bed, so no complaints there! ; ) I really cannot recommend this frame enough, it is one of the best Amazon purchases I have made. If you're looking for something sturdy, easy to put together (seriously only like FOUR PIECES in total!), excellent under-bed storage, and durable, GET THIS FRAME! ... show more
Reviewed in the United States on June 10, 2019 by Nahrissa
    • Easy set up, good quality
Size: Queen Style: 14"
The frame comes pre-assembled all you need to do is screw the two pieces together. Super easy to put together and is the perfect height. Works great and is nice and sturdy.
Reviewed in the United States on November 15, 2023 by Patti Ann
    • TALL, quiet, sturdy, and easy to assemble
Size: Queen Style: 18"
Two nights of use and happy so far (June, 2016). I always write updates if my opinion changes, so if no comments, assume I am still happy with the purchase. This was incredibly easy to assemble (I actually think it was made more difficult by having a second person helping and getting in each other's way with the limited space in the room). Just unfold, fold out legs, secure braces on 4 legs (I had to unscrew the wing-nuts a bit to make that happen), tighten wing-nuts - repeat with other side, flip over and line up (rounded edges to the outside) and screw together two sides with bolts and wing nuts that slide through pre-drilled holes. That is it - easy peasy. Make sure to get the legs completely straight and listen for the "click" as the braces are pushed in place. I think most people who have had issues in the past either had defective items to start with (e.g., damaged in delivery) or failed to get the braces fully into place so the legs are fully engaged. Comfort-wise: much more comfortable than when I had my mattress directly on the floor. However, it was slightly more comfortable with my old wooden platform bed from Ikea. But, at 1/3 the price (this was just under $100 when I ordered it), I am fine with this alternative. Height: it is tall. I am 5'5" and have to get on tippy-toes to get into bed. It reminds me of staying at a hotel with the extra tall beds. I probably would have preferred the regular 14 inch bed, but the current price was nearly twice the price of the tall frame, and my back could not take another week of sleeping on the floor. The extra height is great for storing space, but a pain for finding an appropriate skirt. I managed to order the wrong size skirt, so I have yet to comment on how well that works. There is plenty of storage space underneath. For now, it is just a playground for my cat. Noise: none. nada. not a squeak or a peep. Optional non-skid pad: I ordered a set of non-skid pads, but they are on backorder, so I will have to update after they arrive. I went for the set of 2 pads, as recommended for people choosing to use a bedskirt. The idea is to put one between the frame and the bedskirt, and the second goes between the bedskirt and the mattress. I will see if it helps, as I did have to push the mattress back into place this afternoon - it shimmied about an inch to one side since being set up. ... show more
Reviewed in the United States on June 24, 2016 by ProfJJ
    • So happy I'm reviewing it after taking it down
Size: Queen Style: 18"
I bought this frame for my guest room, thinking that I needed good storage space. It was easy to assemble and sturdy enough to be comfortable for any size guest. That said, an 18" frame and a 12" mattress make for an uncomfortably tall bed and stand as proof that I didn't think the pairing through. After a year, I concluded that I didn't really use the storage space and didn't like making "climb into bed" a literal statement for my guests. So I bought a new frame and started dreading the job of taking this one apart. I shouldn't have! It was at least as simple to disassemble as it had to been to assemble. It was so light and easy to deal with even though it had been so sturdy and silent in use, that I just had to write a review. Summary: It is a great frame/base combo that's easy to work with. ... show more
Reviewed in the United States on October 14, 2023 by Sherry

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