Removed the old gaskets by pulling them free. No tools and it took about 30 minutes. Placed each new gasket along the door frame and pressed the flange into the groove by hand. The right door took under 5 minutes. Freezer door a little longer, just because of the floor location. The left door was more work. I ended removing the door assembly (the plastic and metal bar attached to the left door) to get access to the complete frame. That added about 15 minutes to the repair for removal and reinstallation. Only tools were a flathead screwdriver to pop out the heater element and a Phillips's head to remove the center hinge attachment. Total repair time was something like 30 minutes. The difficulty level was a 2, only because of the left door.