This is a K-tab patio door roller assembly with a 1-1/2 in. concave steel ball bearing roller. The T-shaped tab (K-tab) is simply slid up into a T shaped receptacle in the bottom of the patio door. No screws are required. The housing is 3/4 in. wide with a dimple width of 7/8 in., 1-1/4 in. tall and 2-1/4 in. long. The dimples secure it within the door's bottom frame. Used by Marshall and a variety of other sliding door manufacturers.

• Used by Marshall and a variety of other patio door manufacturers
• The T-shaped tab (K-Tab) is simply slid up into a T-shaped receptacle in the bottom of the patio door
• 1-1/2 in. diameter concave ball bearing roller
• Stamped steel body and roller