Grizzly H8820 37" x 60" A O Sanding Belt 120 Grit, 3 pk. FAMVGR • Heats drive air to optimum I.D x Length:2" x 75' • Heats drive air to optimum temperature Heats as required to keep rotator housing warm enough to prevent condensation by maintaining exhaust temperatures above the dew point Daily weekly Schedule – This unit can be programmed to start in the morning open coated on a very heavy "Y" weight polyester backing with a Resin Bond system that no equivalent product can outperform The superior backing more than justifies the additional cost over lesser "X" weight backings in their longer belt life and their ability to be washed… furthering the savings