4" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Color_R-4.2 Yellow Our coils have a a

Our coils have a a very high PSI burst pressure

& EN 13180 standards

1/2” - 3119 PSI

Do not measure the overall size of the register itself

Quality Packaging – Carefully shrink wrapped with cardboard backing to prevent damage in shipment

4" Insulated Aluminum Flexible HVAC Duct R-4.2 – 25' Length Color_R-4.2 Yellow Our coils have a a+ Product Details High Quality Aluminum housing on the outside and on the inside for the best insulation value Insulation A thick blanket of fiberglass insulation provides you with an R Value of 4. 2 Energy Efficient Air tight inner core decreases the pressure loss and provides a more hygienic environment high energy efficient No fiberglass erosion into air stream Design Designed to withstand bends and sharp turns without kinking. Tough reinforced