Zinus Premium SmartBase 4 Extra Inches high for Under-bed
$148.44
Product Overview
The Zinus Premium SmartBase is a heavy-duty mattress foundation engineered to deliver unmatched strength, stability, and long-term performance. Designed for those who value durability and practicality, this platform bed frame doubles as a reliable box spring replacement while adding four inches of crucial under-bed clearance. Crafted from high-grade steel with a sleek black finish, the SmartBase supports up to 3000 pounds of evenly distributed weight—making it one of the sturdiest foundations on the market. Its robust construction ensures consistent support night after night, eliminating common issues like sagging, creaking, or shifting that can disrupt sleep. Whether you’re upgrading an old setup, optimizing limited bedroom space, or simply seeking a quiet, no-frills sleeping surface, the Zinus SmartBase integrates seamlessly into modern bedroom environments with minimal effort.
Key Features
- Heavy-Duty Steel Construction: Built using premium-quality steel, this foundation offers exceptional structural integrity and resistance to wear over time. The reinforced framework prevents bending and deformation, even under significant loads.
- Supports Up to 3000 lbs of Evenly Distributed Weight: Engineered with multiple load-bearing contact points across the base, this frame distributes weight efficiently to maintain flatness and stability regardless of how your mattress is used.
- 4-Inch Height Design: The elevated profile creates valuable storage space underneath your bed—perfect for storing seasonal items, luggage, extra linens, or out-of-season clothing without cluttering living areas.
- Quiet and Noise-Free Operation: Unlike traditional box springs or flimsy metal frames that produce noise when moved or slept on, the SmartBase’s solid slat design and secure connections ensure silent operation throughout the night.
- Platform Bed Frame Functionality: Serves as a complete alternative to traditional box springs by allowing direct placement of your mattress on the slatted surface, promoting better airflow and consistent support across the entire sleeping area.
Technical Specifications
- Weight Capacity: 3000 lbs (evenly distributed)
- Height: 4 inches
- Material: Heavy-gauge steel with powder-coated finish
- Dimensions: Queen size (60″ W x 80″ L x 4″ H)
- Color: Matte black
- Model Number: OLB-SB13-18Q
- Assembly Required: Yes, with included tools and instructions
- Mattress Compatibility: Standard Queen-sized mattresses only
Benefits & Use Cases
The Zinus SmartBase shines in real-world scenarios where both durability and space efficiency matter most. Its 4-inch height transforms unused under-bed areas into functional storage zones—ideal for maximizing small bedrooms or apartments where every square foot counts. This added clearance makes it easier to access stored items without lifting the mattress and allows vacuum cleaners to glide underneath more easily. As a full platform bed frame, it eliminates the need for a bulky box spring while providing superior support through its closely spaced wooden slats and rigid steel perimeter.
For couples or individuals who share a bed, the SmartBase’s stable surface reduces motion transfer compared to softer foundations, helping partners stay undisturbed during restless moments. The open-grid design also promotes improved air circulation beneath the mattress, which may help regulate temperature and reduce moisture buildup over time—potentially extending the life of your mattress by minimizing heat and humidity retention.
Another major advantage is compatibility: the frame works well with adjustable bed bases (though mounting hardware may need to be purchased separately) and pairs seamlessly with all standard Queen mattresses, including memory foam, latex, hybrid, and innerspring models. Because the surface features evenly distributed support points rather than large gaps, there’s no risk of your mattress sinking or developing pressure hotspots.
Installation is straightforward—no special skills required—and the included hardware ensures tight, secure assembly. Once set up, the SmartBase requires virtually no maintenance and remains structurally sound for years, making it a cost-effective long-term investment in your sleep quality.
Important Notes
This product is intended solely for indoor residential use within standard home environments. Avoid exposing the frame to excessive moisture, direct sunlight, or extreme temperature fluctuations, as these conditions could compromise the finish or structural components over time. Assembly requires only basic household tools and follows a simple step-by-step process outlined in the provided manual.
Please note that this listing includes only the SmartBase foundation and does not include a mattress, headboard, or any additional bedding accessories. While compatible with most Queen-sized mattresses (including those over 12 inches thick), always measure your current mattress dimensions before purchasing to confirm proper fit. The frame is not designed to be used outdoors, in RVs, or in commercial settings such as hotels or dormitories.
For optimal performance and longevity, place your mattress directly onto the slatted surface without placing any additional padding between the mattress and frame. Using a protective mattress cover is recommended to shield against dust and debris entering the under-bed storage area.
9 reviews for Zinus Premium SmartBase 4 Extra Inches high for Under-bed
Add a review
Related Products
Yaheetech Upholstered Bed Frame, Modern Queen Bed Platform
AMERLIFE King Size Upholstered Bed, Modern Velvet Bed Frame
Nahrissa –
Updated: Full review two years later! (Preliminary Review: Unboxing and set-up)
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 withthis 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!
Blanca –
Very sturdy bedframe with no noise
These are perfect for a tall young adult man. Itâs sturdy, easy to set, and no noise or squeaking.A great item and great price.
Tom –
Wonderful bed frame.
For reference, I’ve owned this bed frame for almost 5 years. I came back to write a review because I like it so much.Pros:- easy to install- I love the recessed feet so you don’t bang your toes on them. I’ve never hit my toe on the feet of this bed.- extremely sturdy. We have a full latex mattress that weighs over 200 lb in addition to both me and my wife sleeping on the bed. It’s never bent or deformed in any way.- The underbed storage is great. There is plenty of roomCons:- I haven’t found one yetIs it a decent value for the money? Absolutely. This would be my go-to if I ever needed a new bed frame.Is it durable or decent quality? Very much so. It’s less expensive then many others but feels top-notch.Is it easy to use? Very easy to put together and set up.Does it match the description/photos? Yes. It looks very nice and just like the description photos. Color was exactly what I thought it would be.Does the bed slide on the frame? Surprisingly, not at all.
C. Norborg –
I will say that this bed frame is far superior to the bed frame I got from a furniture …
Got this bed frame along with my Zinus mattress and while I’ll say the mattress is probably of equal quality with a much more expensive store bought mattress, I will say that this bed frame is far superior to the bed frame I got from a furniture store.When I bought my king memory foam mattress in the store, I also bought the box springs and wood bed with metal frame inside. The decorative wood bed frame/headboard is of ok quality, not great, but the frame that supports the mattress has always worried me. Very few legs and they were bending right away, Not sturdy at all.This Zinus frame on the other hand is excellent in comparison. Very easy to assemble, just a few wingnuts you need to tighten by hand and a screw/wingnut you put between the two pieces of the frame. However, you end up with a rock solid frame that is much sturdier and less likely to bend and break! I have since moved and the Zinus frame is as easy to take down as it is to put up again. I will caution you to pay attention when putting together, there is a right and a wrong way that is easy to mix up, but just read the instructions and its quite easy.One big advantage of the Zinus frame/mattress combo is the additional sturdiness of the frame makes it so that you don’t need a box spring for the mattress. It keeps its shape quite well without one. I went with the 18″ frame to get extra space underneath, but to be honest the 14″ one would have been just fine and gave me lots of space also. One drawback to the one I went with is the bed is a bit high for one of my dogs to get on it, so she stays on the floor.One again, excellent product, far superior to frames you get with beds in stores. No need for box springs at all!!
K Smith –
Easily set up in about 10 minutes by 2 middle-aged women who didn’t want to put their glasses on to read the instructions. I found that the diagonal support pieces (that you have to swing into place and then tighten the wing-nuts on) were a bit stubborn – they seemed very tight and then suddenly snapped in place. We made sure everything was snug before we put the mattress in place.I’ve been using it for a month now, no creaking and it feels sturdy.My only issue is that I wish the clearance was a bit higher. The 18″ model was about twice the price for the extra 2″ height, so I decided to try this. The 18″ would have allowed me to use my existing Rubbermaid 68L totes; instead, I made a trip to a local store and bought 2 kinds of Sterilite totes, alternating the 2 different lengths and widths, to use all the space underneath. Even these were a bit tight at the top, so I added rubber furniture cups under the legs, and that gave me just enough room so it doesn’t grab at the top. Solved!
Artur N –
Es súper ligera y aunque solo usa un par de tornillos para juntar dos bases; una vez armada se siente super resistente. Además su altura fue excelente para guardar cosas debajo de la cama
Nacho de Artois –
Compre la base King Deluxe, para mi colchon King Size y le vino perfecto, le queda grande o sobrado al colchón por no mas de 5 cm de cada lado, ya con el edredón la verdad es que ni se nota y mucho menos lo sientes por que no te golpeas, el armado es la cosa mas fácil y practico del mundo, no demoras mas de 10 minutos en armarlo, el resultado es que te sorprende de lo práctico y resistente que se siente.Por último, la base es alta, lo que te permite guardar un maleta sin problema, lo que lo hace todavÃa mejor.
Helliphant –
I have always just put my bed on a box spring on the floor, but I felt I needed more storage in a small living space so, after some looking around I bought this.I had, at first, been hesitant about a metal frame because they are usually so unstable and tend to squeak with every movement. I always slept like crap on metal frames because I am a light sleeper and need a good amount of back support. But the frame had good reviews and was incredibly cheap compared to more fashionable wooden frame options. Too my delight, I found that this frame has none of the problems I was concerned about. It’s really light and easy to put together – essentially, the legs just fold out and latch into place. That doesn’t sound like a sturdy setup, but trust me, it is; the metal is very thick. The entire thing folds together for easy moving if you need it. I honestly think you could even use it as a camping cot with a blow up mattress and something to put between it and the slats, simply because of how light and easy it is to move.If you’re looking for a quiet metal frame with lots of storage space underneath, I’d absolutely recommend this one. My housemate ended up going with a slightly different model from the same brand and she’s very happy with it as well.
Jasmine –
This bed frame was incredibly easy to assemble – I did it by myself in under 10 minutes. It’s very sturdy and doesn’t make any noise. The under-bed storage space is a huge bonus. Excellent value for the price!