Bases for secure rooftop mounting of equipment are quickly manufactured to precise specifications by Thybar Corporation, Addison, Illinois. Advanced laser technology offers the tightest tolerances and allow for a superior weld at a competitive price. Each base is custom manufactured due to the varying specifications of rooftop units and roof configurations. Delivery is usually within two weeks after receipt of the order.Options include a built-in roof pitch, extra height for installation of sound traps beneath the unit, and a pressure treated wood nailer. Each base has all welded construction and is shipped to the job site in one piece if trucking permits. If base is unshipable as one piece, the number of pieces will be kept to a minimum due to all welded corners. Thybar has a licensed PE on staff to answer contractor questions.