IMPERIAL 30 Gauge Galvanized Steel Ductboard Duct Starting Collar Item #816436 | Model #2502 Adjustable from 10-1/2 in -

Adjustable from 10-1/2 in - 14 in high

HEPA Filter

doors and trim

Corrosion resistant shaft

No tools required to access filter

IMPERIAL 30 Gauge Galvanized Steel Ductboard Duct Starting Collar Item #816436 | Model #2502 Adjustable from 10-1/2 in -This Imperial 12 in Duct Board Starting Collar provides a reliable transition from a flat surface to round pipe or insulated flexible duct. Used with duct board or a plenum, this versatile starting collar features extra long tabs to fit most R6 duct board thicknesses through 1 1 2 in. The collar is easy to install with sheet metal screws for a secure fit (screws sold separately). It is made from 30 gauge galvanized steel for rust resistance and