3/8 inch 4 ft x 8 ft Standard Spruce Plywood Door 3" flush valve

3" flush valve

Add clean water in 250 mL (1 cup) intervals

Featuring a 26% slimmer profile frame

It also eliminates the requirement for self-leveling compound

3/8 inch 4 ft x 8 ft Standard Spruce Plywood Door 3" flush valveWhy Plywood? Simply because it outperforms all substitute wood based panels on the market today. Plywood is a highly stable panel. When exposed to moisture or high humidity, plywood is up to seven times more resistant to thickness swell than substitute wood based panels. Plywood also returns to its original dimensions when it dries. Plywood is stronger than substitute wood based panels in the four important engineering strength properties of bending,