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The STERLING 55wq-4r is a right-hand end cap designed for the Senior (Hi-Output) hydronic baseboard heating system. Finished in classic white, this 6-inch end cap provides a clean, finished appearance at the terminal end of a baseboard run. The enclosure features smooth, radius-formed edges that blend with the unit's flowing lines, maintaining visual continuity across the installation. It is a field-installed enclosure component, typically handled by a plumber or hydronic heating technician during baseboard layout and trim-out. The end cap is part of a system engineered for structural rigidity and resistance to warping under repeated thermal cycling.
The 55wq-4r right-hand end cap is suited for residential and light commercial hydronic heating installations where Sterling Senior baseboard sections are used. The Senior series is designed for applications requiring higher heat output, making it appropriate for larger rooms, open floor plans, or spaces with elevated heat loss. This end cap is installed at the right-side termination point of a baseboard run, providing a finished enclosure edge while accommodating the system's Silent Glide Shoe expansion mechanism.
Designed for use with Sterling Senior (Hi-Output) hydronic baseboard heating systems. Compatible with Sterling Senior baseboard enclosure sections used in residential and light commercial hydronic heating applications.
Installation of hydronic baseboard end caps is typically performed by a licensed plumber or hydronic heating technician. Shut down and depressurize the hydronic system and allow components to cool before handling enclosure parts. Ensure the end cap orientation matches the terminal end of the baseboard run before securing. Follow local mechanical codes applicable to hydronic heating system installations.
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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