Insulated Box No Flange 4" Tall

Insulated supply or return boxes designed to save time and cost. Straight through design allows round connection on the back permitting straight through airflow design. Equivalent length supply 35' equivalent length return 10'.
Sizes 6" x 6" x 4" - 6"; packed to order.
Size 8" x 4" x 5" available 24 per order.
Sizes 8" x 8" x 6" - 8"; packed to order.
Sizes 10" x 10", 10" x 8" x 7"; packed to order.
Size 10" x 6" x 6" available 20 per order.
Sizes 12" x 12", 12" x 8" x 8" - 9"; packed to order.
Size 12" x 6" x 6" available 10 per order.
Sizes 12" x 6" x 7" - 8"; available 12 per order.
Size 14" x 6" x 8" available 12 per order.
Sizes 16" x 6" x 8" - 9"; packed to order.