Improve your heating, ventilation and air conditioning duct system by installing this Master Flow 15 in. x 13 in. Ductboard Triangular Terminal Box - R-6 that features an insulated fiberglass design. Insulated ductboard for improved temperature regulation.
- Fiberglass material for durability
- Insulated ductboard for improved temperature regulation
- Minimum temperature rating of -25°F
- Ductboard boxes help to eliminate system noise, have a high thermal efficiency, and when properly sealed with mastic, result in less air leakage
- Always seal seams with code approved mastic or sealant (or duct tape), not included
- Pre-cut for easy assembly using approved foil tape
- R6 insulating value results in higher thermal efficiency for ductboard products