Copyright RetroZone inc.2020 

Factory Direct Round Dampers

Free shipping to continental USA only.   Shipping to Alaska, Hawaii, and International shipping to Canada extra, please place the order and factory will advise of additional shipping amounts prior to shipping. Credit Cards will not be charged until shipping amounts are verified. 




 "Heavy Duty" Series Dampers

Starting at $99.00

RETROZONE HD 14 inch Belimo LMB DAMPER Manufactured by RetroZone Inc, this Heavy Duty round Damper is a 3 wire round damper at a price that competes with residential spring return dampers.

Super Duty

 Commercial Grade


 Starting at $108.00
with FREE Domestic Shipping

Super Duty™

 Commercial Grade, three

wire Belimo powered damper.

Finest quality damper available

Belimo LMB motor, 5 year warranty,

Duro Dyne hardware-bolted-not

welded! can be controlled directly from

a switch or thermostat with no relay,

perfect for zone control systems. Our

most energy efficient damper.

DRD Residential 3 wire dampers

Starting at $80.29
with FREE Domestic Shipping


Three wire, power open, power

close damper draws power only

when opening or closing. Use on all

zone control applications. Heavy

gauge steel with easy to replace

24VAC motor, . Requires 3 wires for


Super Duty Spring Return Dampers

Starting at $144.95
with FREE Domestic Shipping
Available in 24vac and 110vac


Two wire spring return convenience

and functionality without only 1/4 of

the power draw of standard residential

grade two wire dampers. The Finest,

best built, spring return damper on the

market. A must for round ducts 14

inches and over. 

Available in 12 and 110 Volts



NSPRD spring return series

Starting at $75.14
with FREE Domestic Shipping

Round Spring Return 2 Wire

Damper. Durozone NSPRD 2 wire

spring return dampers series. Best

quality spring return residential grade

damper. 5 Year warranty, internal spring mechanism,

24volts AC,  Field Reversible! easy

to make normally open or normally


Retrozone Slip in Dampers

Starting at $110.69

With Free Domestic shipping



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