General installation guidance for linear slot diffusers and vent covers. Always verify against your opening, duct boot, and local code requirements before cutting or mounting.
Before you start
- Turn off or isolate HVAC airflow if working in an active duct opening
- Measure opening length and width at multiple points
- Confirm finish against surrounding ceiling or wall material
- Check screw length for your substrate (drywall, metal boot, wood)
Basic steps
- Dry-fit the cover in the opening and check edge alignment.
- Mark screw locations without over-tightening into fragile substrates.
- Secure the flange with included hardware.
- Adjust internal vanes if the model includes airflow control.
- Restore system operation and listen for rattle or whistle at the edge.
For drawings or custom sizing, contact us.