Description:Cat® HVAC systems provide heating, cooling and filtering of fresh and/or recirculating air for environmental and thermal comfort of the operator while operating Cat heavy-duty equipment. Cat components make certain that your equipment is operating at an optimal level.Application:Cat cover assemblies are specially designed to protect the air filter element in the HVAC system from the operator compartment of Cat heavy-duty equipment. Consult your owner's manual or contact your local Cat dealer for more information.