The circular maritime theme complements any landscape and waterway area. This self-ballasted luminaire is available up to 150 watts with NIGHTSKY® Type III or Type V louver optics. Type III or type V refractors can also be used. Pivoting roof design allows for tool less access to ballast and lamp. Measures 18-3/4" x 28-3/8". A smaller size 1817 measures 14-3/8" x 22-7/8" and comes with a solid spun top or optional Glow Top dome, as shown.