Counterweighted backdraft damper
$227.60 / EA
HV-171 · MasterFormat 23 33 00 · EA
What’s in this rate
This unit is setting one counterweighted backdraft damper in a prepared duct or opening. The HVAC technician installs the frame, checks counterweight balance and blade free travel, and leaves the damper ready for operation. The rate is per each counterweighted backdraft damper; gravity backdraft without counterweight, motorized backdraft, parallel-blade, opposed-blade, and round volume dampers are separate units.
Includes
- counterweighted backdraft damper (class mid)
- frame / linkage / counterweight-mount share
- set and check blade travel
- small tools
Excludes
- gravity / non-counterweighted backdraft damper
- motorized backdraft damper
- parallel-blade, opposed-blade, multi-blade, single-blade, or round volume damper
- fire, smoke, or combination damper
- controls, BAS, or power wiring
- TAB
- after-hours work
Build-up
- Labor 0.85 hr × $68.00 wage and burden
- $57.80
- Material and small tools
- $130.30
- Direct rate (labor, material, and tools)
- $188.10 / EA
- Overhead 10% of direct
- $18.81
- Fee 10% of (direct and overhead)
- $20.69
- Loaded rate
- $227.60 / EA
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