Fibre Metal Cap Style Hard Hat, Type 1, Class E ANSI Classification, SuperEight E2, Ratchet (8-Point)General purpose front brim (Type 1, Class E) hard hats are non vented and they have a front brim to protect the face from sun, reduce glare, and help shed rain. Type 1, Class E hard hats protect wearers from vertical impacts and high voltage conductors (up to 20KV). These hard hats are used by construction workers, road crews, and other workers as required by OSHA.