As a filtration specialist company, we help factories cut defects and costs daily. Here’s a clear breakdown of the 3 most common paint mist filters: where they’re used, why they’re essential, and their key advantages with real specs.
1️⃣ Fiberglass Paint Arrestor Media (Paint Stop Cotton / Exhaust Final Filter Roll) Used where: Ceiling (diffuser) + exhaust final stage in dry spray booths Why essential: Captures overspray droplets (>5-10μm) before they hit parts or clog fans/exhaust Key advantages & specs:
- Progressive density (coarse inlet → fine outlet) → High dust holding: 8-12 kg/m²
- Filtration efficiency: 95-99% @ >5μm particles
- Flame retardant (DIN 4102 B1 / F1 class) – safe for baking ovens
- Low pressure drop: initial ~50-80 Pa, lifetime up to 400-600 Pa
- No fiber shedding → zero risk to paint surface
- Typical roll size: 1m × 20m, thickness 50-100mm (80mm common)
2️⃣ Honeycomb / Pleated Paper Paint Filter (Cardboard V-Type / Andreae Filter) Used where: Main exhaust wall or floor in dry booths (replaces water curtain) Why essential: Handles highest overspray load – one-time capture of massive paint volume Key advantages & specs:
- Centrifugal + multi-layer labyrinth design → Holding capacity: 15-25 kg/m² (some up to 30kg)
- Efficiency: 97-99% on liquid droplets
- Pure dry system – no sludge, VOC compliant, disposal cost 40-60% lower than wet
- Quick change (hot-swap possible) – minimal downtime
- Standard size: 1m × 10m folded (extends to ~3-4m), or box 0.9×0.9m
3️⃣ Polyester Intake / Pre-Filter Media (Roll or Pad – G3/G4 Coarse) Used where: Intake ceiling grids + recirculating air secondary stage Why essential: Blocks external dust/fibers from ruining paint jobs at the source Key advantages & specs:
- Washable / high dust holding: 500-800 g/m²
- Low pressure drop: 20-50 Pa initial → Saves 15-25% fan energy
- MERV 7-9 / EN779 G3-G4 efficiency
- Moisture resistant, durable vs fiberglass
- Common: white/blue roll 1-2m width × 20-50m, 20-50mm thick
Best practice combo: Intake polyester → Exhaust honeycomb main → Fiberglass final polish → Defect rate drops 70-80%, filter spend down 25-40%, easier compliance.
Which filter setup are you running now? Fiberglass rolls, honeycomb boxes, or polyester pads? Share your experience below! 👇
Need free samples, spec comparison sheet, or custom quote? DM me (include booth airflow + paint type for fastest reply)!
