Junair · Downdraft
Junair Multi-Booth
Filter kit, alternatives, and current pricing for the Multi-Booth.
Fitment data is being verified. Our team is still cross-referencing manufacturer specs for the Multi-Booth. Confirm filter sizes with WERCS before ordering: request a fitment confirmation.
Junair model • Multi-Booth
Junair Multi-Booth Filter Program
When one installation does the spraying of several booths, filter management becomes a logistics problem. We turn it back into a schedule.
A production shop hits a ceiling where the booth, not the bodywork, sets the schedule. Junair's Multi-Booth configuration answers that with expanded spray capacity under one roof and one brand of engineering, letting work keep flowing instead of queueing for a single bay. From the filter chair, though, understand what you are buying: a multiplied consumables program. Every spray position carries its own media stack aging at its own rate depending on which bays work hardest. Shops that run one booth can manage filters from memory. Shops that run a Multi-Booth need a system, and building that system is most of what this page is about.
Quick answer
Throughput is the reason the Junair Multi-Booth exists: it is the configuration in Junair's downdraft range aimed at operations that need more spray capacity than a single standalone booth provides. Downdraft airflow means the familiar media stack at every spray position, ceiling diffusion media above, floor-level exhaust arrestor below, pre-filter media in the air handling package. The difference is quantity and coordination: more positions, more change events, more chances to let one stage slip. The Multi-Booth is catalog-documented and pending field verification with us, so the layout and sizes of your specific installation are confirmed by fitment check before bulk media ships.
How Multi-Booth shops choose filters
Per-position stacks. Each spray position in a downdraft installation carries ceiling diffusion media and floor-level arrestor, with pre-filter media wherever make-up air is conditioned. Multiply by your bay count and the annual change-event total gets large enough to justify treating filters as scheduled logistics rather than shelf stock someone remembers to reorder.
Uneven loading is the trap. In multi-position operations the bays never load evenly; whichever position catches the heavy jobs loads its exhaust arrestor fastest. Changing all positions on one calendar wastes media in the light bay and runs the busy bay dirty. The workable pattern is per-position tracking, ideally against manometer readings, with deliveries staged so fresh media is on hand before each position needs it.
Getting sized. The dossier behind this page documents the Multi-Booth in Junair's current range without dimensions, position counts, or a verified slot map, and multi-position installations are exactly where guessed sizes hurt most, since an error multiplies across every bay. First orders run through a fitment check covering each position's ceiling and exhaust dimensions. That one exercise converts your whole installation into a locked record and a single recurring delivery.
Regulatory landscape
Capacity multiplies compliance surface. Under EPA 6H (NESHAP Subpart HHHHHH), each spray position must operate as a filtered enclosure with maintenance records to match, and an inspector will not accept the busy bay running loaded media because the quiet bay's filters look fine. OSHA 1910.94(c) ventilation obligations apply at every position where finishing happens. NFPA 33 scales the same way: overspray accumulation is fire load per position, not per building. A per-bay dated change log, which the delivery schedule effectively writes for you, is the clean answer to all three.
Who runs the Multi-Booth
Multi-Booth operators are volume businesses. Large collision centers and MSO production sites where estimating software has already turned cycle time into money and a bay down for overdue filters is a measurable loss. Fleet refinish operations, delivery vans, municipal vehicles, and rental turnarounds, that spray steadily all week and need capacity in parallel. And busy dealer-group body shops consolidating several rooftops' paint work into one high-capacity facility, where one manager owns the filter program across every position and wants it running itself.
Multi-Booth filter FAQs
How many filters does a Multi-Booth installation actually need?
It depends on the position count and layout of your specific installation, which is exactly what the fitment check maps. Expect ceiling diffusion media and floor arrestor per spray position plus pre-filter media for the air handling package, then a change-event calendar rather than a single kit.
Should every bay change filters on the same day?
Usually not. Bays load unevenly because work mixes differ, so a same-day-everywhere policy overspends on light bays and underserves heavy ones. Track per position, change on condition and cadence, and let the delivery schedule stage media ahead of each position's need.
Is your fitment data for this model verified?
The Multi-Booth is documented from Junair's published range and sits in our verification queue, so no, not field-verified yet, and we say so rather than invent dimensions. The first order's fitment check verifies your installation specifically, which for a multi-position setup is worth doing carefully once.
One bay keeps failing paint jobs the others pass. Filters?
That pattern points at a per-position variable, and media condition is the leading one: the problem bay is often the high-workload position running the oldest ceiling or exhaust media. Compare manometer readings and change dates across bays before suspecting the gun, the painter, or the paint.
Can you handle filter supply for multiple locations, not just multiple bays?
Yes. The same per-position record model extends across sites: each booth's verified sizes live on file, deliveries run per location on its own cadence, and the change documentation stays consistent everywhere, which is what multi-site compliance reviews want to see.
Sources
Primary references cited on this page.
- Junair Multi-Booth manufacturer product pagehttps://www.junair-spraybooths.co.uk/products/spray-booths/
- EPA 40 CFR Part 63 Subpart HHHHHH (NESHAP 6H)https://www.epa.gov/stationary-sources-air-pollution/national-emissions-standards-paint-stripping-and-miscellaneous
- OSHA 29 CFR 1910.94(c), Ventilation: spray finishing operationshttps://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.94