Kaupuar 21x21.5 inch Couch Cushion Support for Sagging seat Replacement Sofa Furniture Support Under Cushions Reinforcement Thicker Boards Inserts Saggy Recliner Armchair Chair

Elastic Sagging Repair - Tried 17“ depth plywood, layers of cardboard, and thin sturdy plastic sheets？ Did nothing work？ Choose our newest adjustable bamboo board! The sagging prevented by the bamboo board is due to the loss of spring support rather than the filling of the sofa being loose.
Correct Adjustable Size - After a lot of investigation found that 21 inches depth is the most suitable size for sofa support, the width can be adjusted by cutting the connecting rope. A bamboo plate of equal to 2 spring support, to achieve without disassembling and repairing the spring and play a substitute role.
Distinctive - Bamboo after a special process, the surface is burr-free, Natural, and durable. Sturdy American style double-layer webbing connection, the bamboo board itself super-tough can give you back the feeling of spring, It will not be as Weak as plastic, and not as MDF wood boards that are easily softened by moisture., nor will it be as hard as wood and lose its elasticity.
Easy to install - It can be placed directly on the sagging place, either horizontally or vertically, depending on the actual situation.
Bamboo can grow into the material in 3 years，Avoid cutting down deep forests.

couch cushion support for sagging seat replacement spring