A Frigidaire oven rack slides into the oven on molded rails on the sides. There are several sets of rails to adjust the rack to different heights. Frigidaire racks are installed the same way as most other oven racks. The rack rests on oven rails that are at the same height on each side of the oven. If it is not inserted correctly, the rack will not be level and will not slide into the oven. As long as the rack is not bent, it should slide into the oven smoothly and effortlessly.
Inspect the oven rack to be sure that it is not bent or otherwise damaged. If it is, replace it with a new rack for your model of Frigidaire oven. A new rack is purchased at an authorized Frigidaire service center. Look for a Frigidaire service center in your area in the phone book or on line.
Hold the rack perpendicular to the open oven door in front of your body. The curved part of the side rails of the rack should be pointed down and the farthest point away from your body.
Set the rack onto a set of rails in the oven and lift the rack up at a 45-degree angle. Slide the rack over the bump toward the front of the rails. Once the rack is over the bump, lower the rack to a 90-degree angle and push it in the rest of the way.