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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 1,811 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Jan 3
Order within 11 hours and 35 minutes
Available payment plans shown during checkout

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


Compatible With Mattress Size: ‎King


Brand: ‎Zinus


Furniture Finish: ‎Alloy Steel


Product Care Instructions: ‎Wipe with Dry Cloth


Assembly Required: ‎Yes


Manufacturer: ‎Zinus


UPC: ‎841550084054


Global Trade Identification Number: ‎54


Item Weight: ‎41 pounds


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: Friday, Jan 3

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Really high bed now!
We've been sleeping with our mattress on the floor for a while now until Hubbs can build me my farmhouse bed. However, I have mobility issues that made it really hard to get up and down. Np more! He did have to get me a step to get in-it's not too high for to climb but without the step it's definitely a climb. But getting OUT of bed now is so easy and nice for me. I just slide right off the side. No more strain on my knees or vertigo spells from having to roll over while I stood up to keep from straining me knees. It went together super easy. Just a few bolts. It's very sturdy. We don't need the box springs anymore. No wiggling or bouncing and it doesn't slide across our hardwood floors. We are very happy! Planning to just build the farmhouse bed around this platform frame. And the best part? It gave me a whole room full of extra storage! I'm able to fit 12 66-quart tubs with lids underneath. (king size) No more overloaded linen closets and stacks of extra comforters. No more having all 2 seasons (we live in Michigan, haha) of clothing crammed in the tiny 100+ yr old farmhouse closet. It's wonderful. Our sheets aren't even coming up off the corners anymore?! Heads up? Go ahead and get the non slip mat for between the mattress and frame. It's inexpensive but will hold the mattress in place. It's similar to the plasticy thing that goes under rugs on wood and tile floors to hild them in place. You're gonna want that. ... show more
Reviewed in the United States on March 25, 2017 by Melle E.
    • Sturdy, Simple set up, Not noisy, PLUS storage. SECOND BUY
Review Image by Christine H. Christine H.
The media could not be loaded. This would be the second one I’ve purchased. I bought my daughter a queen size back at the beginning of 2019. It’s been over 4 years and after being moved and rearranged numerous times hers is still holding up strong. I just bought myself the king size because we liked hers so much. It’s durable.. clearly.. it’s been over 4 years and has held up perfectly. It’s not noisy at all. It’s so simple to set up. I believe I bought her the standard 14 inch and mine I went with the 18 inch. Let’s not forget that the storage space underneathe is an added plus. My daughters 14 inch fits a good amount of storage but my 18 inch, well, it’s incredible and there’s no saying what all I’ll be able to fit under there.. huge amount of space. It’s great for those especially who have small bedrooms and need some extra storage space. Don’t hesitate, just BUY ONE! You won’t be disappointed. My only regret is not buying my daughter the 18 inch as well for the unlimited storage underneath, but then again I don’t think they sold the 18 inch over 4 years ago when I bought hers. ... show more
Reviewed in the United States on May 8, 2023 by Christine H. Christine H.
    • Quality product, this is our 3rd Zinus bed frame and mattress! Outstanding quality
Review Image by MsMadisen MsMadisen
Sorry for the dark quality photo... Honest review here. I bought a 12 inch memory foam mattress the day before this frame showed up, and I am SO thrilled with my purchase! There is SO much room underneath! It was a little bit of an adjustment getting into the bed last night as our old mattress and frame was quite low. But, it is a great change not having to climb out of bed! I managed to unbox, assemble and put the entire bed back together in a matter of 10 minutes, and it only took that long because I had to remove my old frame from the room. My toddler didn’t even wake up. No tool assembly, you just open the support bars and tighten the wing nuts! So easy. Let me tell you, there is double the storage space compared to the older frame. It was truly a great buy! I wouldn’t hesitate to buy another. I did purchase two more of these same frames twin size for my daughters and they have held up from jumping on the bed and midnight cuddle sessions between the 4 of us. Probably a combined 500 lbs! Easy peasy. ... show more
Reviewed in the United States on April 8, 2021 by MsMadisen MsMadisen
    • The BEST - Very surprised and impressed.
WOW -- This product will ultimately replace traditional bed frames. It is that good. After setting this up and using it, I do not understand why the mattress stores even bother to sell traditional, heavy, sharp cornered, bed frames. All traditional bed frames should be destroyed and replaced with this light weight, quick set up, study, no-squeak, no-plastic-broken-wheels/mounts, genius design. I was shocked at how light and easy this was to set up. We had an expensive Serta mattress that we thought was time to throw away after only a few years. But, by chance, we decided to change the bed frame to have storage space underneath. Turns out that all the uneven lumps in our bed were not the mattress but the crappy serta box springs and broken ultra-heavy duty bed frame. We discovered this when we replaced the old with this Zinus SmartBase--now our bed is even and not lumpy, and doesn't squeak. Very sturdy when getting in and out of bed. The only thing you need to add is a stick pad so the bed doesn't slip. We had on hand an ikea under carpet pad with latex coating ($14 bucks at Ikea) and this worked perfect so the bed doesn't slip on the metal frame. Sumer amount of storage. By the way, I weigh 210 and my wife is 155 (don't say I told you), and our kids sometimes all get on the bed at the same time. No issues with all that weight. Very sturdy and strong. ... show more
Reviewed in the United States on February 11, 2017 by Mark Twain Student
    • This frame may need to be broken-in! Otherwise, 5/5.
Quick and simple? At present I am enjoying this frame. Extra details: When I first purchased this product it went missing during delivery. Amazon was quick and friendly with resolving the issue by shipping me a replacement. Then, over two weeks later, the original miraculously showed up on my doorstep. I contacted Amazon as I didn't want to be charged twice and they told me that it was fine for me to keep it and that I would not be charged twice. During the early stages of use I heard a loud pop like a broken weld while simply adjusting it by hand, however I could not find the location of the noise. During the first few weeks of use it did not live up to it's standard of being silent, with mild creaking. However! It has stopped creaking, I believe the pop may have just been part of the adjustment, and I am currently pleased with this product. It's sturdy, silent, and the under-space is to die for. As someone who lives in a small space with little storage this has saved my life. 3-4/5 for early use, 5/5 for current "broken in" use. ... show more
Reviewed in the United States on December 1, 2016 by Caleb Hackney

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