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Zinus

ZINUS Quick Lock Metal Smart Box Spring / 4 Inch Mattress Foundation / Strong Metal Structure / Easy Assembly, King

    • Based on 7,136 reviews
Condition: New
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$209.05 Why this price?

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, May 27
Order within 15 hours and 48 minutes
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Features

  • Steel Interior Frame With Steel Slats and a Poly Jacquard Cover
  • HASSLE & HEADACHE FREE - The Quick Lock Metal Smart Box Spring comes together with easy-to-follow instructions, fewer bolts and absolutely no headaches; assembly thats intuitive and packaging that seems to defy the laws of physics - now thats what we call a new-age box spring
  • DURABLY ENGINEERED - A durable steel frame is used to construct the interior framework of this foundation; twin size supports a maximum weight capacity of 350 lbs, while all other sizes can support up to 700 lbs
  • LOW PROFILE DESIGN - A 4 inch height is perfect for taller mattresses or for those who enjoy their bed lower to the floor
  • THOUGHTFULLY PACKAGED - All parts, tools and instructions are packed into one compact box that ships straight to your door; Quick Snap assembly system makes set-up intuitive and stress-free
  • Worry-free 5 year limited warranty included; box spring only, a bed frame or platform bed is required to support this foundation and is sold separately

Description

We like to think of the Quick Lock Metal Smart Box Spring as the 2.0 version of your traditional mattress foundation. Made sturdier than ever by its substantial steel frame and with its game-changing assembly method, we’ve developed a better way to deliver great sleep to your door. Created with closely spaced slats to accompany your latex, memory foam or spring mattress, this durable box spring comes in three different thicknesses so your bed can be as short or as tall as you like it. The Smart Box Spring features our fool- proof Quick Lock assembly system, meaning you spend less time screwing in bolts, and you get to be pleasantly surprised by how simply and quickly it comes together. You may even pat yourself on the back once you’re done (in fact, we encourage that). We’re so sure of this foundation (along with hundreds of happy customers) that it’s backed by a 5 year worry-free warranty, so you can sleep confidently for years to come.


Product Dimensions: 79 x 75 x 4 inches


Item Weight: 57.6 pounds


Manufacturer: Zinus


Country of Origin: China


Item model number: OLB-QLBS-4K


Is Discontinued By Manufacturer: No


Fabric Type: Steel Interior Frame With Steel Slats and a Poly Jacquard Cover


Assembly Required: Yes


Warranty Description: Worry-free 5 year limited warranty included.


Batteries Required?: No


Included Components: Foundation, Steel Slat, Cover


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 27

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.

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Similar Products

Top Amazon Reviews

    • Great for Plus Size People!
Size: King Style Name: 4 Inch Design: Smart Box Spring
Review Image by MS MS
I've had this for a couple of months now. I bought this to use as a foundation to lay my mattress on (not as a box spring, which is the other application). I wanted a low-profile bed because my dachshunds like to jump on and off the bed (they won't use pet stairs) and I was worried they'd hurt themselves on our old, much higher bed. I LOVE this thing! It was SO simple to put together- my husband and I had it together in 10 minutes, and it really wasn't even a two-person job. We're both overweight, and it's so sturdy! I was always worried about the slats breaking on our old bed- a few of them had cracked! This one is all metal and the slats are very close together, making it super supportive and strong. The one thing I was worried about was creaking noises because it's all metal, but it makes no noise whatsoever, ever. I will say that it firmed up my mattress quite a bit. I invested in a new, top-of-the-line mattress and was a little surprised by how firm it is on this support system (it was much softer on my old, traditional bed frame with box spring), but I got used to it. Whenever we need a new mattress, I plan on purchasing a much softer one to go with this bed. Using a box spring would probably help, but it would raise the height too much for my dogs, so I'm just dealing with the firmness. Overall, this thing is great! We love it, our dogs love the height, and I'm so glad I purchased it. ... show more
Reviewed in the United States on July 29, 2017 by MS MS
    • Half the item is good, other half is unusable!
Size: King Style Name: 4 Inch Design: Smart Box Spring
This item consists of 2 parts, the box spring and the cover. The boxspring part of the product is just fine and easy to assemble. However, as several other customers commented, the cover enclosed with our king sized bed boxspring didn’t even come close to fitting. I really didn’t think I needed the cover until the sheets wouldn’t stay tucked in with only the metal frame. I called the Zinus customer support number multiple times over a couple of weeks to request one that would fit. The recording makes you think they will answer but even after a lengthy hold time you end up having to leave a message and they never returned any of my calls. I order from Amazon a lot and have never had a single problem that was not resolved but when I contacted them, they said they could not send a “part” as it was packaged as two items and my only choice was to return the item. The box Is gone and it is a heavy time that required assembly with probably 20 metal pieces and 40 screws, so returning it is not very feasible. I would NOT purchase from this seller again!!! ... show more
Reviewed in the United States on March 11, 2018 by Lily
    • Hugely bent piece of metal and no CS
Size: Full Style Name: 9 Inch Design: Smart Box Spring
Was delivered damaged and can’t get the company to replace the part. Will update review as situation progresses. So far very unhappy with Zinus UPDATE- after a week and a half of emailing them and our daughter not able to sleep in her bed, they finally told us to return the entire thing to Amazon and buy again, replacing the bent metal piece. No thank you. We will be returning it and NOT repurchasing. Natalie was zero help. Zinus provided a damaged product and terrible customer service. We are very disappointed. ... show more
Reviewed in the United States on July 2, 2018 by Anonymous2
    • This is an amazing product!
Size: Queen Style Name: 7.5 Inch Design: Smart Box Spring
Review Image by Nish Nish
Review Image by Nish Nish
Review Image by Nish Nish
Review Image by Nish Nish
Review Image by Nish Nish
Review Image by Nish Nish
This is an amazing product. Took about 20 minutes to assemble. It comes with a cover but I don't use it. The metal slats are less than 3.5 inch apart. It may be hard to find the instruction manual and the screws as it is tucked away and hidden from view. It is supposed to be a box spring, but I use it as a bed frame. Love it! ... show more
Reviewed in the United States on July 16, 2017 by Nish Nish
    • Really solid platform - highly recommend
Size: King Style Name: 7.5 Inch Design: Smart Box Spring
Review Image by K. Haas K. Haas
Review Image by K. Haas K. Haas
This is a really nice bed platform. It took me about 45 minutes to put it together, zip on the fabric cover and place it inside my bed frame. It's very solid and has about 3" spacing between slats, so it can support a regular mattress, memory foam mattress, or any of the new mattresses that are shipped in boxes. Very excited about the support it provides, how solid it feels, and that it does not squeak or make any noise when you lay on your bed. It also would be very easy to break down and pack if you wanted to move. ... show more
Reviewed in the United States on August 16, 2017 by K. Haas K. Haas
    • Fantastic! Way better than one with wooden slats.
Size: Queen Style Name: 4 Inch Design: Smart Box Spring
Review Image by Xayna Xayna
If anyone is ever in the market for a platform bed OR boxspring, I HIGHLY recommend this, ESPECIALLY for short ppl, or special needs ppl, or if you use a wheelchair or just need your bed to not be as high. It comes in twin, full, Queen, ( this one) and King. No silly wood slats that can break. This is tough and sturdy and can be used with a bedframe as the boxspring, because, it really IS the boxspring. .Or also as a platform ( what my daughter needs)and skip the frame and boxspring ( since it is a boxspring in disguise. It can be used for a regular innerspring mattress, or a memory foam mattress. I believe it supports up to 500 lbs, including the weight of the mattress. This ranges in price depending on size. This is Queen Size. This was $119 free shipping thru Amazon. It is very sturdy and feels and looks like it cost a lot more than $119. It was way too easy to put together..so easy, that there were not even written instructions. The only instructions were an illustration of where the bars and rails are placed, and which size screws to use. 16 screws, and the slates pop in. The metal slates are close together. The tool to put it together is included. There are even a few extra screws marked as extra parts*.It comes with a fabric encasement cover, zippered. It is optional and not necessary to use. Also, the black metal of this bed is very modern BUT, if you are using this as a platform bed, this can be used with virtually ANY decor because the item is so discreet. My adult daughter ( this frame is for her bed) has antique/shabby chic girly decor and this does NOT clash. Also, if you go up a size for your quilt or bedspread, you wont even see it. Oh, and, from what I read, this platform frame is not compatible for headboards or footboards, but my daughter is not into that anyway. She is special needs and will permanently use a wheelchair and this frame, with her new 11" mattress, is perfect. She also needs to be closer to the ground in case she would accidentally roll off. she is pretty good about not letting that happen, but accidents happen. Her mattress is 11" deep but if you have a younger child, who has special needs or physical limitations, you can get a mattress thats only 6"-8" deep..just a heads-up if you are, or know, a person who has physical disabilities or limitations who needs something closer to the ground. My girl is about 5'2".115 lbs. 26 yrs old. ... show more
Reviewed in the United States on August 16, 2017 by Xayna Xayna

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