Large Equipment Downdraft Booths

High Performance Paint Booths

Generally accepted as the best airflow style, downdraft spray booths do an excellent job of controlling overspray and contamination. This style of booth is typically used in automotive refinishing where a high quality "Class A" finish is required.

down-draft-boothsTypical Downdraft Configuration

In the downdraft booth, the air flow is from the overhead inlet plenum, which is fitted with high quality filters to remove any potential inbound dust or contamination, and moves down towards the building floor.

The building floor has a sunken pit to accept either dry filter or water wash exhaust. A bar-type grating is laid over the pit opening. The booth can also be placed on an elevated platform in order to avoid pit construction. The top of booth may be open or enclosed with a filter input plenum. Most downdraft booths have overhead, filtered input plenums. A booth with a filter plenum is normally used in conjunction with a heated air make-up unit. This is considered a must for a clean paint job.

During the spray cycle operation, fresh air is pulled into the make-up air system, heated to 70°F, then filtered to remove air borne overspray and 100% exhausted to atmosphere.