Louvers are simply placed in the wall opening behind the wood grilles. The air flow is adjusted with a regular screwdriver while the grille and louvers are in place. There is no need to disassemble to adjust. Dampers are made of metal.

installing a geometric grille with a damper

louvers

duct size Price Each $
8 x 4 24.95
8 x 6 24.95
8 x 8 24.95
10 x 4 24.95
10 x 6 24.95
10 x 8 24.95
10 x 10 24.95
12 x 4 24.95
12 x 6 24.95
12 x 8 24.95
12 x 10 24.95
12 x 12 24.95
14 x 4 24.95
14 x 6 24.95
14 x 8 24.95
14 x 12 24.95