Honeywell SPRD20X12/U 1089094

The static pressure regulating damper (SPRD) is a round or rectangular 1-blade barometric relief damper. It is a mechanical damper with no electrical connections. The blade has a counter-balance weighted arm that can be adjusted to open when necessary. It is recommended for use on zone damper systems up to 1/2 in static pressure and up to 2000 cfm.

Honeywell Static Pressure Regulating Damper, Series: SPRD, 20 x 10 in Size, 3000 cu-ft/min, Single Blade, Steel, Rectangular, 0.5 in WC Differential Pressure Pressure, 19-27/32 in L

• 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
• For larger systems and tighter pressure control, use MARD damper and static pressure controller (SPC)

• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/Honeywell_SPRD20X12_U_Manual.pdf