4 hole, 22.5mm, Pushbutton Enclosureosure, Polycarbonate

Electronic instrument enclosures, designed for mounting printed circuit boards or DIN rail mounted components; The polycarbonate material carries a UL flammability rating of UL94 5VA and is suitable for outdoor use; Lid and mounting holes are located outside of the gasket seal; Lid is secured with self captivating M4 stainless steel machine screws (included), threaded into integral stainless steel bushings (for repetitive assembly & disassembly); Heavy duty 16 gauge galvanized steel panels available (see chart); All stainless steel hardware to avoid corrosion caused by dissimilar metals; Gasket is a preformed, high temperature U.L. listed silicone rubber. Gasket is replaceable; Gasketed lid with two piece "tongue & groove" construction provides protection against access of oil, dust and water; Internal DIN rail mounting tabs; Threaded (M3) integral brass inserts & standoffs designed for M3.5 or #6 self tapping screws for P.C. board or inner panel mounting in all but the smallest size; Vertical P.C. card guides (for 1.5 mm thick P.C. boards) are molded in all but the smallest size