Parallel Volume Damper Low Leak 3000PLL-50X16 Accessories 2" ADC compliant round collar

2" ADC compliant round collar with bead for ease of installation

3/16" cross bars

22 gauge steel blades with an insulated blanket

For damper free area chart A click here * 2563 - Out-of-Airstream fire door

T-Bar hinged 2 Cone Step Down Diffuser with Round Collar

Parallel Volume Damper Low Leak 3000PLL-50X16 Accessories 2" ADC compliant round 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