SeaChoice One LED Waterproof Trailer Light Kit - The Seachoice One LED Waterproof Trailer Light Kit is designed for 12V marine trailer application, has a sealed waterproof design, and has a traditional style that goes with many trailer options. Stud mount lights mount on 2in centers Acrylic lens, plastic housing Includes mounting hardware Single light dimensions: 5-1/16in W x 4-9/16in H x 2-7/8in D Meets the requirements of SAE/DOT/FMVSS/CMVSS standards when properly installed