Paint Booth Exhaust Ductwork for Side Downdraft Booths
Side downdraft paint booth exhaust ductwork collects air through lower side plenums and routes it to the exhaust fan and discharge point. Double D Mechanical coordinates duct paths with sidewall filters, service platforms, make-up air, booth controls, nearby utilities and part movement through the booth.
Discuss your installationLower Side Plenum Routing
Side downdraft booths need careful coordination at the lower exhaust plenums. Duct transitions, supports and access doors should preserve service space along both sides of the booth.
Balanced Pull Along the Booth Length
Air should move consistently from the supply area toward the side exhaust zones. Duct layout, filter condition, fan connection and make-up air delivery all influence how evenly the booth captures overspray.
Clearance Beside Walls and Platforms
Side exhaust arrangements can compete with walkways, platforms, columns and utility runs. Planning the duct route around those features keeps operators and maintenance staff from losing needed access.
Fan Location and Discharge Path
Fan placement affects noise, vibration, service access and the route to the outside. The layout should account for roof or wall penetrations, structural support and nearby mechanical equipment.
Frequently asked questions
How does side downdraft exhaust differ from a pit booth?
Side downdraft booths collect exhaust through lower side zones rather than relying only on a full floor pit, so side clearance and plenum access matter.
Can ductwork be routed from both sides of the booth?
Some layouts may require collection from both side plenums. The actual routing depends on the booth design, fan location and building constraints.
Why is access along the booth sides important?
Filters, panels, dampers and duct connections may need service along the sidewalls, so platforms, walls and stored materials should not block them.
What information is useful for a site review?
Provide booth drawings, side plenum details, fan data, photos of both sides of the booth, make-up air location and nearby obstructions.
Does exhaust ductwork affect finish quality?
It can. Poorly balanced exhaust can contribute to uneven airflow, overspray movement and dust control problems in the booth.