4- Duct opening 3-3/4" H x 29-3/4" W (Overall size 5 H x 31 W) Black ProVertical return (no damper) with NO screw holes for $206.00 each - 4 for $824.00
12- Duct opening 3-1/2" H x 19-1/2" W (Overall size 5 H x 21 W) Black ProVertical return (no damper) with NO screw holes for $141.00 each - 12 for $1692.00
6- Duct opening 3-1/2" H x 31-1/2" W (Overall size 5 H x 33 W) Black ProVertical return (no damper) with NO screw holes for $219.00 each - 6 for $1314.00
