"Constructed of paintable, corrosion-resistant ABS plastic with no sharp edges. For 3" I.D. ventilation system use with 13451 collector box. Installs with #8 fasteners. Dimensions: 17-7/8" L x 3-7/16" H x 3/4" D"
Colors: Off-White Cut Out: 2-1/4" H x 16" L" Sold: Each