Thybar officials say the filter curb for rooftop equipment adds filter capacity to rooftop HVAC units. Each filter curb is custom manufactured to precise specifications by the company, and most are shipped fully assembled. Advanced laser technology offers the tightest tolerances and superior construction at a competitive price.

Delivery is usually within two weeks after receipt of the order. Filter curbs feature all welded construction, factory-insulated walls, integral filter rack and access door for servicing filters. Options include a built-in roof pitch, extra height for installation of sound traps beneath the unit and a pressure treated wood nailer.