V-Gard Propionate Visors provide impact protection and are good for those applications where chemical splash hazards also exist. They offer increased impact protection and superior optical quality over acetate visors. Being moulded makes them optically correct, and helps ensure they maintain good visibility and reduced eye fatigue. Their chemical and heat resistance is better as they are thicker and not as stressed as flat visors. Compatible with MSA helmet mounted ear defenders, V-Gard browguard and chingards. Dimensions: 203x432mm with a thickness of 2.5mm. EN166:2001 Personal Eye Protection (1B 3). 1 Optical class 1 for permanent usage. B Medium energy impact protection (B = 120 m/s). 3 Protection against droplets and splashes of liquids.