King Koil's Semi-Flex performance grid steel mattress foundation is an ultra-supportive boxspring option that's stronger, lasts longer, and creates less noise than all-wood alternatives. The reinforced steel grid adds surface coverage and enhances stability.
King Koil's Semi-Flex performance grid steel mattress foundation is an ultra-supportive boxspring option that's stronger, lasts longer, and creates less noise than all-wood alternatives. The reinforced steel grid adds surface coverage and enhances stability.