Prime Line Products B 513 Screen Door Roller Assembly 2 Pack

Product Description

The PRIME LINE PRODUCTS B 513 is a screen door roller assembly designed to restore smooth, consistent sliding operation to patio screen doors. Each assembly pairs a 1-inch steel ball bearing roller with a heat-treated M-shaped tension spring measuring 2-5/16 inches in length. The M-profile spring geometry provides the lateral tension required to keep the screen door tracking correctly in its frame channel. This kit ships as a 2-pack, making it practical for replacing both rollers in a single door in one service call. Installation is typically performed by glaziers, general contractors, or experienced handymen during patio door maintenance or screen replacement work.

The B 513 assembly is suited for residential patio screen doors and is compatible with a variety of patio door manufacturers that use this roller and spring configuration. The ball bearing roller construction reduces friction across the door track, which is especially useful on older screen doors where worn plastic rollers cause binding or misalignment. The 2-pack quantity aligns with standard patio door roller replacement practice, covering the full bottom or top roller set in one purchase.

Key Features

• 1-inch steel ball bearing roller for low-friction, durable track engagement
• Heat-treated M-shaped tension spring maintains consistent door tension over time
• Spring length of 2-5/16 inches fits standard patio screen door roller pockets
• 2-pack quantity covers a complete roller replacement on one door
• Steel construction resists deformation under repeated cycling

Compatibility

Designed as a replacement roller assembly for a variety of patio screen door manufacturers that use an M-shaped tension spring roller configuration. No specific model numbers are stated by the manufacturer for this part.

Installation Notes

Screen door roller replacement is a general carpentry or glazing task and does not require licensed trade work in most jurisdictions. Remove the screen door from its track before beginning, and inspect the track channel for debris or damage that could affect roller seating. Use a screwdriver to adjust the roller height after installation so the door clears the threshold and slides without binding. Do not force the roller assembly into a pocket that does not match the spring profile, as this can damage the spring or frame.