Intake side. The Truck/Bus Booth runs an expanded GFS downdraft pressurized ceiling-plenum with diffusion-grade media filling a much larger panel grid than a passenger-car Ultra. Polyester ceiling diffusion is the catalog default; fiberglass diffusion is available for cleaner ambient profiles. The expanded ceiling area means more total media per kit, but the cycle cadence per panel runs similar to passenger-car downdraft because the airflow scales with the booth.

Exhaust side. The Truck/Bus Booth exhaust pit is wider and deeper than a passenger-car Ultra, more pad media per shipment, with the same fiberglass-arrestor catalog default and polyester-arrestor upgrade path. Heavy-truck and transit-bus coating systems often involve high-build primers and specialized topcoats that load exhaust media differently than passenger-car waterborne basecoat, the polyester-arrestor is more common on commercial-vehicle workloads. Our 25-entry filter media taxonomy distinguishes 12 exhaust types (fiberglass-arrestor, polyester-arrestor, accordion-paper, paper-mesh, pocketed-paper, cube-overspray-arrestor, tower-exhaust-pocket-bag, plus five more) alongside 9 intake types and 4 specialty types. The Truck/Bus Booth verified-fitment kit names the specific media-type slug per slot.

Slot expectations are queued for re-mapping. Honesty note: the booth-model slot expectations row for the GFS Truck/Bus Booth in our database is currently flagged in the verification queue as pending re-mapping against the new 25-entry filter media taxonomy (we expanded from 9 to 25 media types on 2026-05-09). The kit you receive is correct, we're updating the metadata record, not the physical fitment.

Cycle math. Commercial-vehicle workloads cycle longer than passenger-car collision because production tempo is scheduled rather than reactive, fewer vehicles per week but each vehicle takes longer in the booth. Intake ceiling at 45-75 days; exhaust pit at 21-45 days; AMU pre-filter at 90-120 days. Subscription delivery calibrates per position.

Truck/Bus Booth installations sit under varied NESHAP source categories depending on the operator. Independent commercial-vehicle refinishers fall under Subpart HHHHHH 6H Area Source. OEM truck-body finishers may sit under Subpart MM (paper and other web coating, when applicable) or other industrial product subparts depending on product mix. Transit-agency paint facilities operate under municipal or agency-level air-quality compliance plus federal OSHA spray-finishing standards (29 CFR 1910.94). Subscription delivery records produce the maintenance log audit-ready under any of those regimes, with capture-efficiency documentation accompanying every shipment.