Michigan Discount Mattress

Custom Size Boxspring Foundation (9″ tall)

Best for: Olympic queen or 3/4 foundation

A 9″ wood foundation built to your inches, including 66″ × 80″ Olympic queen, 48″ × 75″ or 48″ × 74″ three-quarter, and 60″ × 74″ short queen.

Good to know: Handmade sizes can run up to about ½″ off, and custom pieces aren't returnable, so order 1″ under.

Where to get it

  • michigandiscountmattress.comQueen $170 (list (standard 60″ × 80″ Queen, 9″)) · checked Oct 20See price

We may earn a commission if you buy. Check the size and price on the seller’s site.

The facts

Type
Foundation · Wood
Material
Solid wood frame covered in cloth
Height
9″
Needs a foundation
No
Trial and returns
Custom sizes can't be returned

Sizes

Custom sizes are offered. Confirm your exact inches with the seller.

Price for every size

From the seller’s site on Oct 24. Prices change often, so check before you buy.

SizePrice
RV Bunk (30 × 75) 9 in solid wood foundation$498See it
Truck Sleeper (35 × 79) 9 in solid wood foundation$508See it
Truck Sleeper (42 × 80) 9 in solid wood foundation$556See it
Three Quarter (48 × 74) 9 in solid wood foundation$528See it
Three Quarter (48 × 75) 9 in solid wood foundation$528See it
Full XL (53 × 80) 9 in solid wood foundation$556See it
Full XL (54 × 80) 9 in solid wood foundation$556See it
RV Short Queen (60 × 74) 9 in solid wood foundation$556See it
RV Short Queen (60 × 75) 9 in solid wood foundation$556See it
Olympic Queen (66 × 80) 9 in solid wood foundation$724See it
RV Short King (72 × 75) 9 in solid wood foundation$724See it
RV King (72 × 80) 9 in solid wood foundation$724See it
Where this information came from
  1. 66×80 custom price, heights, return and sizing policy
  2. 48×75 custom price, heights, return and sizing policy
  3. 60×74 custom price, heights, return and sizing policy
  4. 72×80 custom price, heights, return and sizing policy
  5. Standard 9″ foundation prices, cloth-covered wood construction
  6. 72×75 custom size page: 9″, 5.5″ and 2″ bunkie prices (checked 2026-10-21)
  7. 30×75 custom size page: 9″, 5.5″ and 2″ bunkie prices (checked 2026-10-21)
  8. 35×79 custom size page: 9″, 5.5″ and 2″ bunkie prices (checked 2026-10-21)
  9. 42×80 custom size page: 9″, 5.5″ and 2″ bunkie prices (checked 2026-10-21)
  10. 53×80 custom size page: 9″, 5.5″ and 2″ bunkie prices (checked 2026-10-21)
  11. Custom size pages for 70×80, 70×74, 28×75, 30×74, 30×80, 32×74, 34×75 and 36×84: 9″, 5.5″ and 2″ bunkie prices (checked 2026-10-28)

Checked Oct 20. Specs and terms can change.

More bed frames & foundations

LET’S FIND YOUR FIT

A few inches make
all the difference.

Enter your platform’s inside dimensions. We’ll find the exact listed size, or show the next step.

×
Need a hand measuring?

Played from YouTube. Watch on YouTube ↗