plus two more in the base

The Spectrum Continuous Flow Supplied Air Respirator is compatible with economical low pressure air sources such as Bullard Free-Air® pumps or with conventional breathing air compressors or cylinders

Frame: Powder-coated steel side panels and frame

reducing the risk of leaks and maintaining system integrity during operation

5" x 14" DECIBEL RATING 60 dBA

Allegro Exhaust Filter length_20-in plus two more in theDescription Replacement Exhaust Filter, For Use With Ambient Air Pumps, Compatible with Brand Allegro, Compatible with Manufacturer Part Number 9806, 9821, 9832, 9833, 9850, 2 3 4 in Height, 2 in Width Dimensions Size 2 3 4 in H x 2 in dia Height 2 3 4 in Width 2 in Details For Use With Ambient Air Pumps Item Replacement Exhaust Filter Brand and Series Allegro Compatible with Manufacturer Part Number 9806, 9821, 9832, 9833, 9850 Compatible with Brand