Copyright RetroZone inc.2020 

Factory Direct SD "Super Duty" Series Dampers

Starting at $108.00
now includes Free Standard Shipping
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. 

Available from sizes 3 inches  to 18 inches

The SD line of round mechanical dampers provides you with a Commercial grade round

damper at a price that competes with residential grade dampers.  The quality of materials is

 "second to none" and is backed up by a 5 year - Best in Industry Warranty.


Due to the low sales volume on these 3” and 4” sheet-metal dampers, a slightly different damper can may be used than the one pictured. This damper will still feature a Belimo LMB24 motor.

Belimo LMB24-3-T 3 Wire Power Open/Power Close Brushless Motor

-True Commercial Quality

- 45 in - Ibs Torque
- Minimum Open and Close Adjustments
- 90 second activation
- Motor will not heat up

-Can operate same as a spring return damper in Slave Zone set-ups
- Rated up to 2 in. of Static Pressure
- Duro-Dyne Direct Coupled Linkage, Bronze
Bushings, and a 1/2 in. universal drive shaft

5 Year Warranty!
Best industry warranty available!  Motor covered by conditional Belimo manufactures warranty for up to five years;  exclusions apply.    Copy of complete warranty available upon request.

- Heavy gauge galvanized steel with reinforcing
beads for super duty strength

- Compatible with any zoning system or application using a power open / power close damper + works with slave zones!

 3,4,5,6,7, and 8 inch SD Damper

9,10, and 12  inch SD Damper

 14 and 16 inch SD Damper

18 inch SD Damper





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