Parallel Volume Damper Low Leak 3000PLL-64X22 Commercial Square to round transition collar

Square to round transition collar

Heavy Duty Construction

Single deflection radius mount spiral pipe grille with adjustable blades

1” rim size (2” larger than nominal duct size / order size)

Egg Crate T-Bar Filter Grille 2"

Parallel Volume Damper Low Leak 3000PLL-64X22 Commercial Square to round transition collarh3. 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