LSF Accessories
411
Non-flanged horizontal mount exhaust backdraft damper
Non-flanged horizontal mount exhaust backdraft damper
- Sizes available: 8"W x 8"H to 30"W x 30"H
- Galvanized Steel frame with aluminum blades
- Maximum free area velocity - 2000 fpm
- Optional motor pack available (411611)
- Use in roof curbs, duct work or wall collars when using a fan or power roof ventilator
- 411 auto exhaust damper is part of the S&P Ventilation Systems Quickship program and ship out in 3 days
502
Rear flanged low velocity gravity exhaust shutter
- Sizes available: 10"W x 10"H to 24"W x 24"H
- Galvanized Steel frame with aluminum blades
- Maximum free area velocity - 2000 fpm
- Use with direct or belt drive exhaust fans
- For vertical mounting only
556
Rear flanged general purpose exhaust shutter
- Sizes available: 12"W x 12"H to 48"W x 48"H
- Single or Double Panel
- Galvanized Steel frame with aluminum blades
- Maximum free area velocity - 2500 fpm
- Optional motor pack available (EAS)
- Use with direct or belt drive exhaust fans
- For vertical mounting only