Thermopan 1-3/4" x 2" x 2-1/4" Leveler Twist Blocks (4-Pack)

Level furnaces, electric heaters, air conditioners or any other types of home or industrial equipment Product Features THERMO-TWIST™ LEVELER BLOCKS twist to three different heights to level furnaces, electric heaters and air conditioners quickly and easily. Lightweight - better than bricks. Tested crushing strength to 5,000 lbs. per block Water, weather and insect proof. Won’t chip, crack, split or rot.