8" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length 18in diameter + Product Details Size –

+ Product Details Size – 16"w X 25"h pleated MERV 2 filter for HVAC return filter grille - 12 Pack

This access door boasts a spring-loaded locking mechanism

Actual Filter Size – 21 3/4"w x 29 3/4" x 1"

Actual Front End Outer Dimensions Are 16" Width X 5" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

+ Product Details Size – The size of 4" straight saddle stick on take-off is 10"/12"/14" and it is compatible with duct 4"

8" Insulated Aluminum Flexible HVAC Duct R-6.0 – 25' Length 18in diameter + Product Details Size –+ 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