1 Year Warranty

For many years, this was a great-selling and affordable option in standard sizes. Symbol Mattress has now made it available in custom and antique sizes; oftentimes perfect for many of these needs because it comes in at only six inches thick. 

An advantage of a poly foam mattress is that it won't sink in, in the way that memory foam does. Poly foam also doesn't retain heat in the way that a visco-elastic model would. Additonally, if your sleep has ever been disturbed by the bouncing and swaying motion that comes with owning an innerspring mattress, the "Custom Antique 6" may be a good option for you. With its quilted cover and Symbol Foam, it's a nice feel for such a budget-conscious price.  This mattress has a firmer feel - offering a respectable level of support. 

Made in the USA of non-toxic (CertiPUR-US) foams, you can rest more easily without worrying about breathing in a strong smell that tends to indicate unnatural materials. This mattress is comprised of two layers: one of comfortable soft foam and one of a medium-density base foam. 

*To save you on this mattress's price, the Custom Antique 6 is a "select cover" mattress; meaning, you may receive a different colored cover and/or border. 

Width: Length:

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Custom Antique 6 - All-Foam Mattress

This mattress can only be made in standard sizes. To see prices, please click here

Mattress Scale
semi firm mattress
Approx. Height of Mattress: 6"

This Mattress Features:

CertiPUR-US certified foams are:


✓ Made without ozone depleters
✓ Made without PBDEs, TDCPP or TCEP (”Tris”) flame retardants
✓ Made without mercury, lead, and other heavy metals
✓ Made without formaldehyde
✓ Low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million)
✓ Made without phthalates regulated by the Consumer Product Safety Commission


FR Fiber Barrier
Quilted Select Cover

Mattress(Top Side)
1" Symbol Soft Foam

5" Medium-Density Base Foam


1 Total Years (1 full)

Custom Antique 6 - All-Foam Mattress

As much as we like to offer mattresses that contain the enormously wide array of features that are available these days, sometimes both comfort and serviceability are very well achieved when things are kept simple. The "Custom Antique 6" is a basic all-foam mattress made by Symbol Mattress and it's absolutely great for many of our customers who need custom/odd sizes made; it comes in at only six inches thick and fits most antique and RV needs. On this polyurethane foam model, you won't experience the movement when someone gets in or out of the bed. 

Over the years, an almost innumerable amount of people have purchased this simply-constructed mattress model - in larger sizes and for multiple sleepers. It's very affordable and has a track record of holding up for much longer than expected. With a base layer that's quite firm, Symbol has added a soft inch to its construction; giving it a medium-firm comfort level. I - personally - have always liked poly foam mattresses because they don't seem to hold very much of my body heat. 

If a firmer sleeping surface that doesn't contain a spring unit is what you are seeking, this is definitely a model to have a look at. It packs a lot of comfort into a lower profile design; great for those custom needs for which you require a thinner mattress. You'll still experience supportive comfort with this basic and budget-minded bed option. 



  • Shipping or delivery of this item to most areas within the 48 contiguous states only. Delivery of this item to Alaska, Hawaii, US Territories or APO/FPO addresses will require added charges. Please call customer service for rates and availability.
  • Free LTL freight delivery to most cities in the continental US. Destination must be accessible by large truck. Some locations may have a small surcharge.
  • LTL freight service is curbside to your driveway only. White Glove is available for an extra fee.
  • For complete details, read our Shipping and Return policies.



Measure all 4 sides of your mattress and bed frame before ordering.
We recommend you order the mattress 1 inch smaller than the space it is meant to fill. This will leave extra room for sheets, blankets, and variations in production size. Some people like a larger gap to really have room for your hands to reach down and change sheets easily. Please note that production size is not guaranteed to be exact. Most models are built within ±0.5 inches but the difference can be larger, especially on innerspring models. Custom mattresses are hand made by a factory worker who will take a standard mattress, then shorten it to your size. With the way spring coils are shaped, they will not work when cut in half, so an entire row of springs must be removed to modify mattress sizes. As each row is removed, the bed size changes by 1-2 inches, so your bed may not come exactly the size you order.

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Common Questions

What if it doesn't fit?
We will never ship out a mattress that exceeds the size you have ordered without contacting you first to check if the extra size will cause an issue. Since these are custom made for you they can not be returned, so please be careful when taking measurements. On some bed sets, the box spring will be a different size than the mattress so you will need to measure both pieces. Also, since beds are often set up not perfectly square, you will need to measure all four sides of the bed to find the correct size. Be sure to check for boards or bolts that might protrude in to the mattress area and order your pieces small enough to fit inside of these protrusions.
What sizes are available?
Any size is available upon request but with most models you are limited to being smaller than a King mattress. If you need an odd size bigger than a King, here are some models that can be supersized. Please call us to find out what prices would be.
Can I really order any size and shape?
At this time, with only 1 exception (found here), we only distribute 4-sided rectangular mattresses with no special notches cut from the corners. The size can be as large as a king, so up to 76" wide and up to 84" long. If you need an odd size bigger than a king, please call us to find out what models are available. You can also order a custom mattress small enough to fit in a baby's crib. Mattresses are formed by rows of metal springs and since springs cannot work if cut in half, your mattress core will be sized in 1-2 inch increments. This means that if you order 47x63 it will be built between 46x62 to 48x64 but most of the time it will come within 0.5 inches of the requested size. Please let us know how precise your size must be.
What about the box spring?
It is very important to measure the size of your box separate from your mattress because in many older bed sets, the box was made slightly smaller than the mattress. The length and width of solid foundation box springs can be custom made to fit exact dimensions. The thickness can not be customized but boxes are available in several standard thicknesses ranging from 4.5-9 inches.
How soon will my mattress arrive?
Once your order is paid for, a specialist from Michigan Discount Mattress will call you on the phone to verify your sizes and delivery information. Production will begin and usually takes 3-6 days. After production, the mattress will then be packaged at the warehouse within 48 hours to protect it during shipping to your home. Shipping takes 2-8 days depending on the destination city. The combination of producing, packing and delivering means that you should receive your mattress within 1-3 weeks of the day you order. Our streamlined process has successfully delivered 90% of our orders within 3 weeks.