Replacement frame foam air filter:
1. fireproofing
2. RoHS Compliant
3. UL certified
4. Custom available

 Replacement frame foam air filter: 

1. Medium: mesh polyurethane foam, 25-60PPI and different colors

2. Frame: aluminum frame, customized with different shapes and thickness
3. Certification: UL 94 HF-1, UL900 class