These economical polarizers offer unmatched extinction of glare and greatly increased durability compared to polarizing films. They are laminated to a single piece of acrylic and are intended for applications where an external surface must be exposed to potentially harsh conditions, while the internal surface is naturally situated in a protected environment. Appropriate examples include lighting applications, rotating polarizers threaded onto the front of lenses, and polarizers that are mounted in camera enclosures. PA401 sheet material is routinely laser cut to any desired custom shape, size and mounting configuration. These polarizers utilize our HT008 polarizing film  and are offered in 3.2mm thickness.