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8" American Hardwood Foundation

Starting At: $199.00

Item usually ships out in 1-2 business days.
  • Overview
  • Features
  • Dimensions
  • Warranty
  • Returns
  • Reviews

Say goodbye to poor quality, memory foam mattress foundations.'s new, patent pending 8" American Hardwood Mattress Foundation combines U.S. grown poplar hardwood and a high quality quilted cover, to create a beautiful and strong foundation. By using poplar hardwood, we are able to make a foundation with smooth, splinter free finished wood that is kiln dried to 8%, ensuring it doesn't warp or split over time. Traditionally, foundations are made with pine which has around 18% moisture content. The high moisture content of the pine can cause it to warp, and in turn, squeak over time.

Easy & Convenient

The foundation arrives packed and wrapped in a compact box so it is easy to move into a small space and can be set up using only the supplied tool in around 30 minutes. The result is a foundation that's strong and durable, yet can be broken down for moving or storage. Once assembled, the foundation provides the perfect platform for supporting your mattress. These high quality foundations are proudly made in the USA. They are 8 inches thick and will fit any corresponding standard size mattress we sell.

More Information

A memory foam foundation takes the place of traditional box springs. It will sit in your metal or wood bed frame and your mattress will go directly on top of it. Both durability and performance of the memory foam mattress depend greatly on the foundation you place it on. Please read our FAQ 'Do I need a foundation or can I use my existing box springs?' for more details.

Please note; Assembled King foundations are 1 complete 75.75x79.25 inch foundation. If your bed frame is designed for a 'Split' King foundation, please order two Twin Extra Long sizes.

Assembled Cal-King foundations are 1 solid 71.75x83.25 inch foundation. 'Split' Cal-King foundations are not available.

  • Made in the USA
  • Comes in a compact box so it can be easily moved through small spaces
  • Assembles in around 30 minutes
  • High-quality poplar hardwood
  • 8" high
  • Meets 16 CFR Part 1633 federal open flame standard
Mattress/Foundation Size Dimensions Weight Shipping Dimensions
Twin 37.75x74.25x8 38 lbs. 4x16x76
Twin Extra Long 37.75x79.25x8 42 lbs. 4x16x81
Full 52.75x74.25x8 53 lbs. 4x16x76
Queen 59.75x79.25x8 65 lbs. 4x16x81
King 75.75x79.25x8 80 lbs. 4x16x81
California King 71.75x83.25x8 79 lbs. 4x16x85

Limited 5-year Warranty

Knockdown Frameworks, Inc. warrants all of its products for five years against any defects that are due to faulty materials or workmanship. We will promptly correct such defects by repair or replacement, at our option, without charge. This warranty covers product defects only and will expire five years after date of purchase by the original consumer purchaser, with proof of purchase required. This warranty does not apply to damage caused by and resulting from misuse, neglect, accident, or improper operation, maintenance, storage, transportation, or handling of the product. This warranty is for the original consumer purchaser for residential use only and does not apply if the product is used in any commercial application (such as rental property). This warranty does not cover any incidental or consequential damages.

Mattress foundations may be returned within the 120 day trial period but are subject to a $50 shipping charges and a 20% restocking fee to cover inspection and repackaging. A return authorization number is required for all foundation returns. Please contact our Customer Care Department at 1-(800)-588-5720 to obtain a RMA number. Foundations must be returned clean and include all pieces to qualify for a refund. Our standard mattress return policy can be found at the link below.