Proper ventilation is the key to the longevity of your equipment! Use the Utility Block Printer Blocks to prevent overheating and damage to your expensive technology!Secure your expensive computer equipment and save stored data from complete loss. These blocks combine two major components not available in over-the-counter industrial Velcro products: One is an oversized cushion pad to offset the feet of your equipment and raise the level up by 5/8" to allow your equipment to vent and move with motion not against it. The second is ridged arrowhead gripping barbs which are the "hook" that grabs the loop. Secured with a simple peel & press application at the base, the blocks are hidden from view. Recommended as a helpful theft deterrent, they are non-damaging to finished furniture and equipment. Great for RV's and Boasts. Each box contains 8 blocks which is enough for 2 items.