


McQuay Economizer Unit – without HVAC Intake Filter
Use of HD Commercial Grade Air Intake Filters positioned from abovethe condenser coil down to the roof deck would protect the condenser coil from airborne debris.
Unprotected Rooftop Unit Coil – Protect with HD Commercial Grade Air Intake Filters
Trane Rooftop Unit
Unprotected Condenser Coils – Use Std. Duty, Med. Duty or HD Commercial Grade Air Intake Filters
Best approach would be using HD Commercial Grade Filter with Twist Lock Fasteners.Std. Duty and Med. Duty Filters Would Also Work