Insulated Box with Flange and Angle Collar

Insulated supply or return boxes save time and money. Straight through design with a 45 degree connection on back allows round connection on the back with straight through airflow design. Equivalent length supply 40' equivalent length return 15'.
Sizes 8" x 4" x 4" - 5"; packed to order
Sizes 10" x 4" x 6", 10" x 6" x 4" - 7"; packed to order.
Sizes 12" x 4" x 7", 12" x 6" x 6" - 7"; packed to order.
Size 12" x 6" x 7" available 8 per box.
Size 14" x 6" x 8" packed to order.