The replacement pulley is made to work with various chain drive openers. The pulley assembly sits on the door side of the rail. Replacement part 26966D.S includes the pulley only.
Use With Opener Models: PMX 300 IC/A, PMX 500 IC/A, PMX 300 IC/B, PMX 500 IC/B, IC250, IC250/B
Usually Ships In One Business Day