If frost accumulation occurs to the point of restricting air flow through vent screens and other air outlets a build up of air pressure can push up roof panels and damage the roof. Gsi wire grill roof vents are less prone to frost blockage with our 3 4 wire spacing than many competitors vents still using 1 2 mesh hardware cloth. The donaldson torit bin vent applies cartridge dust collector technology to continuous duty bin venting applications.
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