16" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Insulated Line The grille is specifically engineered

The grille is specifically engineered for concealed

Actual Filter Size – 27 3/4"w x 33 3/4" x 1"

Extra Strong Frame - Our Frames Are The Strongest On The Market

Contorl Lever To Adjust Louvers According To Season - Complete Open For Summer To Release The Heat

16" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length Insulated Line The grille is specifically engineered+ 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 6. 0 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