Pass Through Powder Coating Booth
Conveyorized Powder Coating. Built to Keep Moving.
RTT Finishing Solutions’ Pass Through Powder Coating Booths are engineered for conveyorized production lines that demand continuous, high-efficiency powder application. A top-mounted conveyor slot carries racked parts through the spray zone while the conveyor itself remains above the booth, giving operators full access to coat both sides of a part using manual spray guns, automatic guns, or a combination of both. Standard models range from 5 to 7 feet wide by 8 feet tall, with airflow from 7,000 to 9,000 CFM at 4.5 inches static pressure.
Powder overspray entrains in the airstream as parts pass through the booth and is carried into the collector module, where cartridge filters capture particulate before air discharges back into the room through a primary and final filter system. The collector module rolls away from the booth for fast color changes, and additional collector modules can be added to support multiple-color operations without downtime between runs.
Every Pass Through booth ships with a NEMA 12, UL-listed control panel factory-mounted, wired, and tested, including a VFD for fan speed control and a door-mounted Magnehelic gauge for filter monitoring. Booth construction uses 18-gauge prime-quality galvanized steel, and ETL-listed E-Light LED fixtures provide code-compliant illumination rated for Class 1 and Class 2 hazardous locations. The system meets and exceeds OSHA and NFPA regulations.
Features
- Top-mounted conveyor slot with above-booth conveyor routing
- Two-sided access for manual and/or automatic spray equipment
- 18-gauge prime-quality galvanized steel construction with engineered support structure
- Roll-away cartridge collector module: factory-assembled, powder-coated white mild steel; primary and final filter modules; removable powder drawer
- Additional collector modules available for multi-color operation
- NEMA 12, UL- and ETL-listed control panel: factory-mounted, pre-wired, and tested
- Automatic or manual cartridge filter pulse-down mode
- Door-mounted Magnehelic gauge for cartridge filter monitoring
- Pressure switches monitor final filter pressure; trigger warning and/or automatic shutdown at set point
- Variable Frequency Drive (VFD) controls fan speed and reduces motor amp load
- Purge control system maintains design-level airflow during operation
- E-Light LED fixtures: 22-gauge steel housing, powder-coated white; 4,000 and 8,000 lumen models
- E-Light ETL-listed for US and Canada: Class 1 Division 2 Groups A, B, C, D; Class 2 Division 2 Groups F and G; no safety interlock required
- Lighting levels engineered using photometric software
- Meets and exceeds all applicable OSHA and NFPA regulations
Benefits
- Keep production moving continuously — conveyorized parts pass straight through to the cure oven without manual booth-to-booth transfer.
- Coat both sides of a part in a single pass — full operator access on either side of the conveyor line reduces handling and rework.
- Switch colors fast — the roll-away collector module clears for cleaning or swap-out without disassembling the booth.
- Run multiple colors without added downtime — additional collector modules support color changeover on high-mix production lines.
- Maintain consistent airflow under continuous load — the purge control system holds design-level airflow throughout extended runs.
- Reduce energy costs — the integrated VFD matches fan speed to actual demand, lowering motor amp draw.
- Catch filter issues before they affect output — the Magnehelic gauge and pressure switches flag loading and trigger shutdown if pressure exceeds set point.
- Simplify installation — the control panel ships factory-wired and tested, reducing field labor and startup risk.
Techincal Specifications
RTT can design and build spray booths in a variety of sizes and configurations. Although our team can engineer a custom booth to fit your needs, below are standard sizes that are quickly available to you.
| Model Number | Interior Dimensions | Part Opening | Operator Access | Airflow | ||||
|---|---|---|---|---|---|---|---|---|
| Width | Height | Length | Width | Height | Auto | Manual | CFM | |
| EPB-05-08-14-PT-S | 5' | 8' | 14' | 3' | 6' | 2 | 2 | 7,000 @ 4.5" SP |
| EPB-06-08-14-PT-S | 6' | 8' | 14' | 4' | 6' | 2 | 2 | 8,000 @ 4.5" SP |
| EPB-07-08-14-PT-S | 7' | 8' | 14' | 5' | 6' | 2 | 2 | 9,000 @ 4.5" SP |
Bright, Efficient Lighting – Included
Each booth includes E-Light LED lighting, offering:
- Lower energy consumption
- True color rendering
- Extended life and reduced maintenance costs
LED housings are constructed of 22-gauge steel and powder-coated white. E-Lights are ETL listed for U.S. and Canada, rated Class 1 Division 2 (Groups A–D) and Class 2 Division 2 (Groups F & G).
RTT lighting is calculated and engineered using photometric software. E-Light fixtures are ETL listed and designed for proper use in spray booths. Because of this, our E-Light does not require a safety interlock saving on installation cost and additional maintenance.
Control Panels
RTT offers pre-wired motor starters, UL-listed control panels, VFD controls, and optional touchscreens to simplify operation, fan speed adjustment, and booth balancing. All panels feature a single-point connection for quick and easy installation.
UL Listed Standard
- Control Panels
Magnetic Motor Starter
- Control Panels
SmartTouch Touchscreen
- Control Panels
Variable Frequency Drive
- Control Panels
Services
RTT provides end-to-end services tailored to every phase of your project, so you never have to look further than one trusted partner.
Custom Engineered Solutions
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Installations
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Help and Support
Access the resources, documentation, and technical support information you need to keep your RTT equipment operating safely, efficiently, and at peak performance.
Product Literature
Frequently Asked Questions
How Do I Adjust Airflow on My Powder Collector?
The control panel is equipped with a “Fan Speed” knob on the door. Adjust the knob to a higher value for more airflow, or a lower value for less airflow.
Where Should the Temperature Sensor Be Located on My Spray Booth?
RTT recommends that the temperature probe be in the discharge ductwork of the Air Make-up Unit (AMU). The probe is to be located as far from the discharge location of the AMU as possible before entering the paint booth intake plenum. This configuration helps to avoid sharp spikes in temperature and will even out the ramp and soak time of the burner. Eliminating the possibility of an over-temperature situation inside the AMU. In rare instances, the temperature probe may be in the intake plenum of the spray booth. Please consult with RTT Technical Support before locating the temperature probe anywhere other than the AMU discharge ductwork.
Why Are My Spray Booth Doors Being Blown Open?
This is typically caused by excessive incoming gas pressure affecting system balance. When gas pressure exceeds regulator ratings:
• Airflow and burner output become unstable
• The system may create positive pressure inside the booth
• Doors can blow open due to improper pressure differential
Check the valve train regulator, system gas pressure, and follow the manufacturer’s recommended pressure ranges.
My Spray Booth and Oven Controls Require a Password to Change Settings - What Is It?
CT/CTC AMU – All passcodes provided in the RTT Booth & AMU Detailed Start-up Guide).
Operator passcode is 2050
Oven – All passcodes in the Oven Operation & Maintenance manual. Maintenance passcode is 1111
My Exhaust Fan Is Not Running Even Though My Booth Has Power — What Could Be Causing It?
There could be several issues that could cause your exhaust fan not to operate. If you have confirmed you have power, do you have a fault on your Variable Frequency Drive (VFD)? Check to see if there is a fault code displayed on the VFD. Depending on the make and model of your VFD these codes can differ.
Additional Resources
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