Exhaust side. In a non-recovery layout the exhaust bank is the capture system, full stop. There is no cartridge reclaim stage pulling powder out of the airstream first, so the exhaust media takes the entire overspray load at the booth's full 8,000 CFM draw. Expect a staged arrangement: a sacrificial first-stage arrestor holding the bulk of the powder ahead of a finer final stage that protects the fan and discharge air. Because Rohner sizes this booth as a family around the STW-8-10-6, media counts and panel dimensions shift with the configuration, so we quote media against your specific booth rather than publishing a one-size panel list.

Cycle math. Powder loads media by weight quickly: a heavy spray day can visibly cake the first stage. Watch static pressure rather than the calendar. When draw at the face weakens and powder starts drifting back at the operator, the first stage is done. Shops that standardize an interval do it by parts throughput, not weeks.

Buying pattern. Since media is consumed on every run, this booth suits a standing replenishment order more than almost any liquid booth does. Get sizes confirmed once through a fitment check, then put the first-stage media on an automatic cadence.

Powder coating sits in a different regulatory lane than liquid spray. EPA's NESHAP 6H rule (40 CFR 63 Subpart HHHHHH) targets spray-applied coatings containing specific metal HAPs, and powder application generally falls outside its spray-application scope. OSHA's ventilation standard, 29 CFR 1910.94(c), still governs the booth: adequate draw at the opening, maintained exhaust filtration, and no contaminated air returned to the workspace. NFPA 33 addresses powder application as well, and the fire-safety concern with powder is combustible dust. Loaded exhaust media holding pounds of organic powder is a fuel package: change it on schedule and get it out of the building promptly.