Chrome plated zinc. 3" duct threads into neck. Hose clamps not required. Cowl/Mouth opening is 7-1/3"
. Screw size is #10.
| Brand | Perko |
| _Material | Cast Zinc |
| _Size | 5-1/4" L x 4" W 3-7/8" H |
| Shipping Details | |
| Weight: | 1.34 lb |
| Length: | 5.0 in |
| Height: | 4.0 in |
| Width: | 4.75 in |