Approved Vendors - Duct Liner, 47 in W, 100 ft L, 1 in THK

Approved Vendors - Duct Liner, 9 in W, 150 ft L, 1-1/4 in THK

Approved Vendors - Duct Liner, 47 in W, 50 ft L, 2 in THK

Approved Vendors - Duct Liner, 48 in W, 50 ft L, 2 in THK

Approved Vendors - Duct Liner, 47-1/2 in W, 70 ft L, 1-1/2 in THK

Approved Vendors - Duct Liner, 47 in W, 70 ft L, 1-1/2 in THK

Approved Vendors - Duct Board, 48 in W, 10 ft L, 1 in THK

Approved Vendors - Duct Board, 48 in W, 10 ft L, 2 in THK

Approved Vendors - Insulated Class 1 Flexible Duct, R6, 10 in ID, 6 ft L

Approved Vendors - Insulated Class 1 Flexible Duct, R6, 12 in ID, 6 ft L