Is that what you need? The difference between a SCBA and a gas mask
MSA Ultra-Elite FacepieceSCBA Sales Co
Supplied Air Respirators (SCBA) | MSA Safety | United Kingdom
3M™ Scott™ AV-3000 HT Facepiece | 3M United States
Genuine Interspiro brand Face mask firefighter SCBA breathing apparatus gas mask | eBay
Scba mask hi-res stock photography and images - Alamy
Scba Long Distance Radio Communication Protection Face Mask - China Full Face Mask, Firefighters Protection Equipment | Made-in-China.com
TRAININGMASK Firefighter Training Regulator, Full Face Respirator Mask with Breathing Resistance, for Scott AV-2000 / AV-3000 SCBA XRT 2.0 : Amazon.co.uk: DIY & Tools