This sliding screen patio door roller is widely used all over the US and is, also, popular in Canada,
The Spring Tension Sliding Screen Patio Door Roller features a 1/4 inch (6.4 millimeter) wide, 1 inch (25.4 millimeter) O.D. nylon wheel with a center groove. The 2-1/4 inch (57.2 millimeter) long steel tension spring is heat treated for durability.
Minimum Order: One Package (two rollersper package).