Round, 12-inch static pressure regulator damper (SPRD). Single-blade, steel barometric damper used to bypass excess air when majority of zone dampers are closed. Counter-balanced weighted arm to control bypass air for zoned systems. Air pressure in duct system increases as zone dampers close, pushing the SPRD open automatically. Arm and weight both adjustable to control amount of air bypassed. Recommended for low-pressure systems with less than 0.5-inch water column (w.c.). For larger systems and tighter pressure control, use MARD damper and static pressure controller (SPC). Additional weights available.
‡Ductless Stock Up and Save offer valid thru May 31, 2019 at participating CE locations. Account must be active and in good standing condition to qualify for terms. Excludes special pricing and all accessories. Special quotes, OEM parts & job pricing excluded. Not valid on previous purchases. Offer cannot be combined with other offers or programs. Management reserves the right to modify or end this promotion at any time without notice. Orders must be placed and taken delivery by May 31, 2019.