HVAC premium Stick-on Collar Duct | Galvanized Steel Metal Collar Duct 30-Gauge | 12" is Compatible with 12" w18h18 and with a built-in back

and with a built-in back 1/2" mesh they also protect you from annoying rodents like mice

and 24 webbing loops

+ Product Details Size – Sheet metal duct board take off start collar is 8" and it is compatible with duct 8"

Actual Front End Outer Dimensions Are 14" Width X 8" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

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HVAC premium Stick-on Collar Duct | Galvanized Steel Metal Collar Duct 30-Gauge | 12" is Compatible with 12" w18h18 and with a built-in back+ Product Details Size Stick on collar is 12" and it is compatible with duct 12". Design It has the main role in HVAC ducting system. The stick on collar helps you in heating, ventilation, and air conditioning (HVAC) to deliver and remove air. Applications The galvanized steel round duct is used to cut into a plenum or rectangular duct to begin a trunk line or branch like runs. Premium Quality Our duct stick on collar has made of high quality