Spiral Pipe Diffuser with Transition Box SD34-12X4G Spiral Pipe Diameter:10" Concealed mounting holes with mounting

Concealed mounting holes with mounting screws

904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 10" Duct Opening (front blades parallel to shortest dimension)

Installation Ring only

Driftwood Tan

For evaporative coolers or central blower systems

Spiral Pipe Diffuser with Transition Box SD34-12X4G Spiral Pipe Diameter:10" Concealed mounting holes with mountingSD34 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