Return Plenum “Coffin Box”

Use where a Metal Insulated Box is needed for Return Air. Set unit and tap in along side or bring in from backside.
  • Easy Installation
  • Sturdy Construction
  • Galvanized Exterior
  • Internally Insulated (R6 Typical)
  • Center Bracing for Additional Support
  • Custom Sizes Available
  • Fabricated to your custom dimensions in your choice of Galvanized, Stainless, Copper, Galvanneal, Galvalume or Black Steel.