Class I (Class A) — NFPA 101; flame spread index <25 (ASTM E84)
Manufacturer datasheets
B2 (DIN 4102) · M4 (NF P92-507) · HB (UL 94) · Class E (ISO 11925-2)
Manufacturer datasheets
A scale is drawn only where every value is a number in the same unit. Where it is not (a range, a class, a different measure) the values are shown as stated rather than forced onto one bar. No embodied-carbon figures appear because we hold none we are licensed to publish.