The square Form Ten HT Style arm mounted luminaires are attached to the poles with an extruded aluminum arm which effects a subtle distancing of the luminaire from the pole, without the use of any exposed hardware. Simplicity of design assures good looks in single, twin, three and four-way configurations. All Gardco housings are permanently sealed and gasketed to be rain-tight, dust-resistant, and insect-proof. Gardco offers two housing construction alternatives. The HT style is only 2" taller than the standard 19" Form 10 luminaire and allows for wattages up to 875w.