Ideal for signs, flags, building facades and landscaping. Construction: Compact NEMA heavy-duty construction. Die-cast aluminum housing front bezel. Bezel removable via position-oriented hinge-cam design. Lens is thermal and shock-resistant, 1/8 clear tempered glass. Finish: Standard finish is dark bronze (DDB) corrosion-resistant polyester powder finish with other architectural colors available. Optics: Three distributions from very wide to medium narrow are available. RB and RG reflectors (horizontal lamp) feature one-piece anodized aluminum-faceted parabolic construction (semi-specular or specular) for high performance and efficiency. TA reflectors (vertical lamp) are highly effective die-formed semi-specular aluminum (Not available with 175M). Electrical: Ballast: High Pressure Sodium – Reactor normal power factor ballast is standard for 35S, 50S or 70S 120V (HX – HPF is optional for 50S or 70S 120V only). All other voltages are standard high reactance, high power factor. Metal halide – High reactance, high power factor for 50-150W and standard with pulse start ignitor technology and constant-wattage autotransformer for 175W. CSA, NOM or INTL required for probe start shipments outside of the US for 175M. Not available 175M SCWA. All ballasts are 100% factory-tested. Electrical components are mounted to the cast aluminum housing, promoting maximum heat dissipation. Socket: Porcelain, horizontally- or vertically-oriented, medium base socket with copper alloy, nickel plated screw shell with center contact. Installation: Die-cast aluminum 1/2 NPSM threaded mounting knuckle is standard. Steel painted mounting yoke is optional. Listings: UL Listed. CSA or NOM Certified. UL Listed for wet locations and 25°C ambient temperature. IP65 rated.