DRD Residential Round Series Mechanical Dampers




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, and bronze bushings.  The most popular damper sold in the USA.  Unlike most 3 wire dampers, the DRD dampers can be used as a slave zone damper (connected directly to a thermostat) without the use of a relay. Requires 3 wires for operation.

Available Sizes:4" to 10", then 12", 14", 16", and 18" diameter

NSPRD Residential Round Series Mechanical Dampers

This damper is a Spring Return Damper with a 2 wire motor
that can be field configured for either Power Open (PO) OR
Power Closed (PC).  The damper blade will remain open or closed, as long as power is supplied to the motor.  Comes standard with
low leakage Vinyl Nitrite gaskets and are available with
24VAC or 110VAC actuators.

Available Sizes: 5" - 10", and 12".
NSPRD Dampers have a 2
Wire Spring Return Motor

SID (Slide In Damper)
Mechanical Damper



The SID is an option for round mechanical dampers. As the name implies, you just cut a slot in the side of the damper, tighten a couple of screws, then wire up the actuator. The pictured model features the highly versital Belimo LMB 24 actuator. Call our warehouse for pricing.

RECTANGULAR MECHANICAL DAMPERS


3150 Rectangular Damper



Starting at $97.00 !

3150 Series Rectangular Mechanical Dampers

OEM quality damper is sold nationwide under major HVAC manufacturer's name, and is our most popular rectangular damper.  Proven 2 wire spring return design is available in a normally open or normally closed configuration.  Order as normally open for use with zone control systems, and normally closed for slave zone applications.  Multi-blade damper does not rattle, since all blades run in nylon bushings, a unique feature for a damper in this price range.  Available in side or bottom mount motor configuration, add 10 percent to your price for bottom mount.  Dampers come with a minimum open kit to allow the damper to never fully close.

Application: Use on any system up to .5 static pressure

The 3085 Series Commercial Damper uses the same quality, multi-opposed blade aluminum housing as the 3150 Series, but features a Honeywell ML6l6l 3 wire, Power Open / Power Close actuator in either a 90 second or 7 minute design.  Other actuators are available including the Belimo LMB24.

May be used with floating set point controls, or any of our zone control panels. Available with a Belimo LMB24T-SR variable voltage motor that takes 4 to 20MA or 2 to 10VDC volt signal to control damper blade position.


Application: Use on any system up to 2" static pressure. The 90 second motors shipped unless the 7 minute motor is specified.

All 3085 Dampers over 24" wide only available in
Bottom Mount Configuration

3045 Series Commercial Rectangular
Mechanical Dampers

Starting at $178.00

The 3045 Series commercial dampers feature wide body, extra rigid damper housings.  Available with neoprene damper seals and the Honeywell ML6161 commercial grade actuators with 90 second or 7 minute actuation times.  The construction of this ultra heavy duty damper prevents jamming or binding, even if installed in warped duct.  Available with Max. Seal Kit (add 15% to price)

Application: Use on a system up to 4" static pressure.
Odd sizes can be made, and usually take 3 - 4 weeks to ship.

3045s Small Size Dampers