These roller assemblies are constructed of stamped steel housings and steel wheels. The housing features flared corners for better gripping power when inserted into the bottom rails of sliding sash. The wheels feature concave (grooved) edges and are designed to glide over raised tracks. Roller assemblies like these are commonly used in showcase windows and display cabinets that are equipped with sliding glass or wood panels.
This concave sliding window roller is constructed from steel. It comes affixed to a stamped steel housing. This style roller is used on sliding and showcase windows.