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The PRIME LINE PRODUCTS D 1791 is a steel ball bearing tandem roller assembly designed for sliding door and window applications. Measuring 1.125 inches, this roller assembly uses a ball bearing design to provide smooth, low-friction movement along door or window tracks. It is packaged in a unit of six, making it a practical choice for multi-unit service calls or full-door replacement jobs. HVAC and building maintenance technicians, glaziers, and general contractors typically install this type of hardware during sliding panel service or renovation work.
This tandem roller assembly is suited for residential and light commercial sliding door or window track systems that require a 1.125-inch roller profile. The ball bearing construction handles repetitive lateral loading common in frequently used sliding panels. The carded packaging format supports retail and counter-sales distribution, and the six-unit pack accommodates full-assembly replacements where both top and bottom rollers need service at the same time.
Designed as an OEM-style replacement tandem roller assembly for sliding door and window systems requiring a 1.125-inch steel ball bearing roller.
Installation is typically performed by a glazier, door hardware technician, or general maintenance professional. Before servicing, ensure the sliding panel is fully removed from the track and secured on a stable work surface. Inspect the track for debris or deformation before installing the new roller assembly. Follow applicable local building codes and manufacturer guidelines for hardware replacement on fenestration systems.
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