123-0021 Light base Tube Diameter 2-3/8" 60mm Base 3-1/8" 80mm Height 4" 100mm 123-0022 Light base Tube Diameter 3" 75mm Base 3-3/4" 95mm Height 4-3/4" 120mm 123-0023 Light base Tube Diameter 3-1/2" 90mm Base 4-1/2" 115mm Height 6-1/8" 155mm 123-0023 Ligh