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DUROZONE SPRING-RETURN DAMPERS

The new DuroZone round spring return dampers NSPRD024 and SPRD110 series, can be configured for either spring OPEN or spring CLOSED operation. For example: Spring-Return OPEN means that when the power is off, the damper OPENS.
DuroZone "Mid-Torque" spring-return round dampers come in sizes from 4 to 20 inches in diameter with a 24 volt motor.

NSPRD Series Features:
Gasketing included for high integrity seal
Single set screw secures motor
DuroZone "Mid-Torque" Spring Return Motor

Note: The DuroZone round spring return dampers with the new Mid-Torque motors are designed for fresh air intake.  Although we recommend the RD, MB and MS series for zoning, the NSPRD024 with a Mid-Torque motor configured spring OPEN can be used for zoning.

DuroZone Round Spring-Return Dampers with 24 volt Mid-Torque Motor

All NSPRD024 dampers are shipped in the spring OPEN, (normally open) position.
If the power is off: DAMPER OPENS.

Item # Code: Description
37340 NSPRD024-4 4 inch diameter spring return round damper
37341 NSPRD024-5 5 inch diameter spring return round damper
37342 NSPRD024-6 6 inch diameter spring return round damper
37343 NSPRD024-7 7 inch diameter spring return round damper
37344 NSPRD024-8 8 inch diameter spring return round damper
37345 NSPRD024-9 9inch diameter spring return round damper
37346 NSPRD024-10 10 inch diameter spring return round damper
37347 NSPRD024-11 11 inch diameter spring return round damper
37348 NSPRD024-12 12 inch diameter spring return round damper
37349 NSPRD024-14 14 inch diameter spring return round damper
37350 NSPRD024-16 16 inch diameter spring return round damper
37351 NSPRD024-18 18 inch diameter spring return round damper
37352 NSPRD024-20 20 inch diameter spring return round damper
35105 NSPRD-RM Replacement Motor for NSPRD024 Series


- The DuroZone round spring return and multi-size spring return dampers with a standard motor are fresh air dampers.  They are not built for zoning.

DuroZone Round Spring Return Dampers with a Standard 110 Volt Motor
Item # Code: Description
37076 SPRD110-5 5 inch diameter spring return round damper
37077 SPRD110-6 6 inch diameter spring return round damper
37078 SPRD110-7 7 inch diameter spring return round damper
37079 SPRD110-8 8 inch diameter spring return round damper
37080 SPRD110-9 9 inch diameter spring return round damper
37081 SPRD110-10 10 inch diameter spring return round damper
37082 SPRD110-11 11 inch diameter spring return round damper
37083 SPRD110-12 12 inch diameter spring return round damper
35142 RMSR110 SPRD110 Replacement Motor for SPRD110 Series

 

Multi-Size Spring-Return Dampers
Notes: - These dampers are either spring return open or closed operation, not both.
            - The SPMS-SO with a Mid-Torque motor can be used for zoning systems, although we recommend the RD, MB and MS series
               for this purpose.
            - All Multi-Size dampers, (except 6x12), have 3 adjustments; 6x12 has two adjustments.

Multi-Size Spring-Return Dampers, 24 Volt Motor Operated, SPMS-SC Series

SC = SPRING CLOSE.  When power is off: Damper CLOSES.   Not for use for zoning.

Item No. Code Duct Height Width
37000 SPMS-612SC 6 inches 8 to 12 inches
37001 SPMS-620SC 6 inches 14 to 20 inches
37002 SPMS-816SC 8 inches 10 to 16 inches
37003 SPMS-824SC 8 inches 18 to 24 inches
37004 SPMS-1016SC 10 inches 10 to 16 inches

 

Multi-Size Spring-Return Dampers, 24 Volt Motor Operated, SPMS-SO Series

SO = SPRING OPEN.  When power is off: Damper OPENS.

Item No. Code Duct Height Width
37005 SPMS-612SO 6 inches 8 to 12 inches
37006 SPMS-620SO 6 inches 14 to 20 inches
37007 SPMS-816SO 8 inches 10 to 16 inches
37008 SPMS-824SO 8 inches 18 to 24 inches
37009 SPMS-1016SO 10 inches 10 to 16 inches
37086 SPMS-1024SO 10 inches 18 to 24 inches
37087 SPMS-1216SO 12 inches 12 to 16 inches
37088 SPMS-1224SO 12 inches 18 to 24 inches
37096 SPMS-1416SO 14 inches 12 to 16 inches
37097 SPMS-1424SO 14 inches 18 to 24 inches

For a replacement motor on a Multi-Size spring-return damper, call our customer service at (514) 422-9760.

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