Sofa Support Board color-lime-green low profile valves securely lock

low profile valves securely lock in air and allow for customized inflation control

creating a strong barrier against accidental spills and leaks

includes 3 extra O-rings for long-lasting use

or mattresses

a great renter friendly option

Sofa Support Board color-lime-green low profile valves securely lockADD STRONG, LONG LASTING SUPPORT TO COUCHES AND SOFAS: easily and quickly upgrade your sagging couch or sofa with our ultra strong, high quality plywood sofa cushion support board; adds extra support and comfort to couches with sagging frames, cushions, or worn out springs; our sofa support boards are 21. 5 wide to cover more surface area, providing more couch cushion support for sagging couch seats ULTRA DURABLE . 43 INCH THICK PLYWOOD BOARDS: unlike