Fits:   Each light includes 8" leads and two #6 fasteners
Bi-Color Light measures: 2 1/2" x 2 1/8"
Side Mount vertical lights measure: 2 1/8" x 1 7/8"
Deck Mount round one color lights measure: 2 1/4" in diameter
Deck Mount one color lights (NOT round) measure 2 1/2" x 2 1/8"