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The AIREX trs-550-w is a retrofit pipe penetration seal designed to close and finish wall openings where refrigerant line sets pass through. It uses a 3/16 inch gasket to create a clean, weather-resistant seal around piping that exits through exterior or interior walls. The cover is white and sized to accommodate line set piping with a 1-3/4 inch diameter. This type of fitting is commonly installed by HVAC technicians during mini-split, split-system, or ductless system installations where a finished, professional appearance at the wall penetration point is required.
This seal is suited for retrofit and new-installation scenarios where 1/2 inch wall insulation thickness is present on the line set. It provides a finished look at the wall exit point and helps reduce air infiltration and pest entry around the pipe opening. HVAC technicians working on residential and light commercial ductless or split-system installs will find this cover useful when replacing worn or missing wall escutcheons or completing new line set runs through finished walls.
Designed as an OEM-style retrofit replacement seal for HVAC line set wall penetrations using 1/2 inch insulated piping with a 1-3/4 inch diameter.
Installation is performed by a qualified HVAC technician. Power down the associated system before working near the line set penetration. The retrofit design allows placement over existing piping without removing or evacuating the refrigerant circuit. Ensure the wall surface is clean and dry before seating the gasket to achieve proper compression and seal.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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