Parallel Blade Volume Damper 3000P-60X30 T-Bar SD52 - Transition Box Spiral

SD52 - Transition Box Spiral Pipe Grille (Single Deflection)

HVL Series Engineering/Performance Data

Options * 304 stainless steel construction h3

Double deflection transition box mount spiral pipe grille

Maximum single section size 24"x24"

Parallel Blade Volume Damper 3000P-60X30 T-Bar SD52 - Transition Box Spiralh3. Standard Features * 16 gauge galvanized channel frame * Parallel blades are cee stiffened 16 gauge galvanized for strength and stability * Blades pivot on non metallic celcon bushings * 1 2" square zinc plated steel pivot pins * 1 2" square zinc plated steel adjustable operating shaft extending up to 4" beyond the air control frame * Single blades on dampers with a height of 12" or less * Mill finish h3. Options * 3000 PLL Low Leak Air Control