Measure the inside width of the closet area where you plan on installing the pull-down closet rod, using a tape measure. A space of between 2 to 3 feet is ideal. Pull-down closet rods adjust to any distance. Just be sure the space has two vertical sides and enough height to accommodate the pull-down rod, which is about 2-1/2 feet tall.
Fit the closet rod to the space. Make pencil marks to indicate where the rod will reside. Take down the unit. Measure the distance to the back wall from the rod. There must be 12 inches of space here.
Put the pull-down closet rod back in the installation space. Line it up with your pencil marks. Check to make sure each side of the rod is an equal distance from the floor of the closet by measuring it with a tape measure.
Install the pull-down rod by screwing the base to the walls with a power screwdriver. The screws are included with your unit. Double-check to make sure the installation is level, using a carpenter's level, and make adjustments to the rod's position by unscrewing the screws and remounting it if needed.