Sliding Window Roller with 3/8" Dual Steel Wheels for Tomrays Tyco 77 Windows

This Sliding Window Roller Assembly has a 9/16" (14.3 mm) wide nylon housing with 3/8" (9.5 mm) flat edge tandem steel rollers. It is used on Tomrays Tyco 77 dual-glazed windows.

the height of the housing is 5/16" and the thickness of the bottom plastic is 1/8" 

Fits on Tomray Tyco 77 Dual Glaze Windows