Three Roller for 4 Panel Doors Instruction Manual


A: If the studs don’t line up with the pre-drilled holes in the rail.

A: You may have neglected the size requirements of the bottom rotating shaft bracket, the door is set too high, or the punching position of the pulley is not perpendicular to the rotating shaft bracket.

A: Please read the installation manual carefully when installing the kit. If the pulley setting is unknown, it must be close to both sides of the door, and other size requirements, please read it carefully.