3M 91191H1-C Readers Safety Glass, , Anti-Fog Lens, Clear Spring Tough and abrasion resistant sealer

Tough and abrasion resistant sealer helps eliminate spalling (freeze-thaw)

Cold patch is stronger

welded for strength

Drainage holes

Large 4" opening

3M 91191H1-C Readers Safety Glass, , Anti-Fog Lens, Clear Spring Tough and abrasion resistant sealerHighlights: Lens Color : Clear Lens Frame Color : Black Frame Magnification : 1. 5 Usage : Multi Purpose Anti scratch lens coating Designed for those who need reading glasses and the protection of safety glasses Built in bifocal power of +1. 5 eliminates the need to switch between glasses to read or see fine details Adjustable temple lengths and lightweight construction Impact resistant lenses absorb 99. 9% UV Meets the requirements of ANSI Z87. 1