The unit is 3 1/8 in l x 3/4 in w x 1 in h, and the roller has a diameter of 1 1/4 in. Because of its versatility, you may use this adjustable roller system with patio doors of any size. This ball-bearing roller is robust and able to handle very heavy loads because it is made of steel. Part# 13c007
Number. 5002524