3 1/2 in 90 Deg Flat Elbow Ivory Fortress
4 1/2 in Ducting Ivory (90 in x 4 5/8 in x 3 1/4 in) Fortress
3 1/2 in Coupler Ivory Fortress
4 1/2 in Tee Ivory Fortress
3 1/2 in Ducting Ivory (90 in x 3 5/8 in x 2 5/8 in) Fortress
4 1/2 in Coupler Ivory Fortress
4 1/2 in Wall Inlet Ivory Fortress
3 1/2 in Wall Inlet Ivory Fortress
3 1/2 In 90 deg Outside Vertical Elbow Ivory Fortress
3-1/2 90 Deg Inside Vertical Elbow Ivory Fortress
4 1/2 in Ducting Ivory (48 in x 4 5/8 in x 3 1/4 in) Fortress
3 1/2 in Ducting White (90 in x 3 5/8 in x 2 5/8 in) Fortress