3M Speedglas - #TBT - Speedglas APC was our 2nd generation of welding helmets - introduced in the late 80's. This photo came from East Coast Welding Supplies Pty Ltd. They bought
Speedglas upgraded Li-on heavy duty battery upgrade kit for Adflo PAPR - BJ Industrial Welding Supplies
3M Speedglas 04-0320-00 Replacement Battery for Use with Speedglas, Filters Utility and 9000 Series Welding Helmet (2/EA): Amazon.com: Tools & Home Improvement
3M Speedglas Adflo 9000 Welding PAPR System
3M™ Speedglas™ SL Auto-Darkening Filter 05-0000-41, Shade 8-12 | 3M United States