While I had my refrigerator out to replace it's cooling unit, I cleaned out the old insulation that was falling from the sides of the cabinet. Then I purchased a water heater fiberglass insulation blanket that measured 48" by 84". I cut the plastic lined insulation right down the middle so I had 2 pieces 24" wide to fit the sides of the cabinet. When I then cut these 2 pieces for the higt of the cabinet, I ended up with 2 pieces that was able to be fitted across the top of the refrigerator. Having the plastic lined insulation made it much easier to slide the refrigerator into place without it catching on the insulation.