Spring-assisted backdraft damper
$208.24 / EA
HV-185 · MasterFormat 23 33 00 · EA
What’s in this rate
This unit is setting one spring-assisted backdraft damper in a prepared duct or opening. The HVAC technician installs the frame, checks spring return and blade free travel, and leaves the damper ready for operation. The rate is per each spring-assisted backdraft damper; gravity backdraft without spring assist, counterweighted backdraft, motorized backdraft, parallel-blade, opposed-blade, and round volume dampers are separate units.
Includes
- spring-assisted backdraft damper (class mid)
- frame / linkage / spring-mount share
- set and check blade travel
- small tools
Excludes
- gravity / non-spring backdraft damper
- 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 0.8 hr × $68.00 wage and burden
- $54.40
- Material and small tools
- $117.70
- Direct rate (labor, material, and tools)
- $172.10 / EA
- Overhead 10% of direct
- $17.21
- Fee 10% of (direct and overhead)
- $18.93
- Loaded rate
- $208.24 / EA
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