The Fortress Home Ranger shoulder pulley is a door-mounted pulley set used to work through shoulder range of motion exercises at home. A rubber-coated webbing strap anchors over the top of a door, the rope runs through a pulley above head height, and the person pulls down on one handle to raise the opposite arm, so the stronger side assists the limb being exercised. This makes it possible to move the shoulder through flexion, abduction and the other planes of movement without a second person present. The handles are adjustable, so the working height can be set to suit the person and whether they are standing or seated, and the rope carries markings that show how far the arm has travelled, which gives a simple way of tracking progress between sessions.

A pulley set lets someone continue shoulder work between appointments, which is usually where range of motion is gained or lost. Because one arm does the pulling, the exercise can be done alone and the effort can be eased off immediately if the movement becomes uncomfortable. The marked rope turns a vague instruction to stretch a little further into something the person can actually see.