Spiral Pipe Diffuser with Transition Box SD34-16X8G Finish:Galvanized Finish contour molded fiberglass back with

contour molded fiberglass back with a foil barrier backing

and 2x4 panels * Soft White

Holds up to 1" filter (not included)

Long throw individually adjustable blades with 1 1/2" blades on 1 1/2" centers or 3" blades on 3" centers

Spiral Pipe Diffuser with Transition Box SD34-16X8G Finish:Galvanized Finish contour molded fiberglass back withSD34 Transition Box Spiral Pipe Grille (DOUBle Deflection) Standard Features Double deflection transition box mount spiral pipe grille Blades are parallel to the shortest dimension Allows for 4 way airflow adjustment Nylon bushings on adj. blades prevent metal on metal rattle Curved saddle with gasket provides airtight fit to spiral pipe Product sizes available to fit spiral pipe diameters 8 48." Spiral pipe diameter must be 4 larger than Height of