Duct Board Top Return Air Box/Boot

Duct Board Top Return Air Box/Boot


Metal Zinc’s Return Air Duct Board Top Box provides an economical way to attach return air grills and return air filter grills.


  • R4 and R6 Return Air Duct Board insulation
  • Multiple sizes available (see chart)
  • Flanges for direct connection to grill
  • Easy attachment to duct with start collar

Standard Construction

  • 30-gauge galvanized steel ASTM A653
  • 3 ½” depth
  • Duct board cut and pieced to size

Optional Construction

  • 26-gauge
  • Optional sizes and depths quoted based on quantity
  • Un-insulated box
  • R8 Insulation
Contact us for more information on this product
Download or print full factsheet on this product

Product specifications

Metal Zinc Part Number Size Gauge Bundle Quantity Pallet Quantity
DBBx101010 x 10305210
DBBx121212 x 12305180
DBBx122412” x 24”30590
DBBx123612” x 36”30590
DBBx142014” x 20”30580
DBBx142514” x 25”30560
DBBx143014” x 30”30560
DBBx162016” x 20”30580
DBBx162516” x 25”30560
DBBx202020” x 20”30580
DBBx202520” x 25”30560
DBBx203020” x 30”30560
DBBx242424” x 24”30560
DBBx243624” x 36”30560
Contact our sales team
to order this product
Call 281.630.0224
or email us

Related products

To learn more about these products or discuss any of your HVAC needs with our team,
Call 281.630.0224 or email [email protected]