

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The STERLING 55wq-3ar is a right-hand end cap designed for use with Sterling Senior hydronic baseboard heating systems. Finished in classic white, this end cap provides a clean, finished appearance at the terminal end of a baseboard run. The radius-formed profile blends with the sleek, flowing lines of the Senior enclosure, maintaining a consistent aesthetic across the installation. At 2.5 inches, it fits the Senior series profile and is suited for installations where a right-hand termination is required. HVAC technicians and plumbers working on hydronic heating systems install this component as part of a complete baseboard assembly.
The Sterling Senior baseboard line is designed for large residential and light commercial hydronic heating applications where higher output is needed. This end cap is a finishing component for Senior series enclosures, used at the right-hand terminal end of a baseboard section. It is appropriate for installations where wall space is limited and a low-profile, high-output baseboard is specified. The white finish suits standard residential and commercial interior environments.
Designed as a right-hand end cap replacement or finishing component for Sterling Senior series hydronic baseboard enclosures.
Installation of hydronic baseboard end caps is typically performed by licensed plumbers or HVAC technicians during new installation or enclosure replacement. Shut down and depressurize the hydronic system before servicing any baseboard components. End caps should be fitted after the heating element and enclosure sections are in place to ensure proper alignment with the enclosure profile. Follow applicable local mechanical codes when working on hydronic heating systems.
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.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!