Paul from SWISCO responded:
May 6, 2019
We appreciate your patience with us. You can use either the 23-199 or the 23-225 that has a convex wheel for your door. To remove the old roller assembly from the door, you first need to lay the door down. Next, take the pressure off the roller assembly. The door frame has slits where the roller housing locking tabs slide into. You might need needle nose pliers to work the tabs out of the door slits. Hopefully, these little bit of steps help you. Please get back to us if you should nee any further assistance. |