Insulated Box with Flange 4″ Tall

Insulated Box with Flange 4″ Tall

  • Available in R4, R6, & R8.
  • 3404F-4 ; 3406F-4 ; 3408F-4
  • Insulated supply or return boxes save time and money. Straight through design allows round connection on the back with straight through airflow design. Equivalent length supply 35', equivalent length return 10'.
  • Size 8" x 4" x 5" available 16 per box.
  • Size 10" x 4" x 4" available 12 per box.
  • Sizes 10" x 6" x 4" - 8"; available 10 per box.
  • Sizes 12" x 4" x 4", 12" x 4" x 6" - 8", 12" x 6" x 6" - 8"; available 8 per box.
  • Size 14" x 6" x 8" available 8 per box.