Duro Dyne

Duro Dyne - 37340 - NSPRD024-4 - 4" Spring Return Round Damper Mid-Torque

Item: DDY37340
MFG: 37340
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NSPRD024-4 - 4" Spring Return Round Damper Mid-Torque


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.

California residents: see Proposition 65 Warning

Features and Specification

Individual Fan Control No
Heat Pump Compatible No
Cycle/Hertz 60
Damper Type Round Zone
EAN 0797582151403
Emergency Heat Switch No
Size 4"
Type Spring-Return Damper
UL Listed No
UL Recognized No
UPC 797582151403
Voltage 24 VAC
Warranty Offered Yes
Package Length 7.7500
Phase Single
Package Height 9.5000
Package Weight 2.4000
Package Width 7.7500
Shape Round
Network Zoning Yes
Brand Duro Dyne


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