The low profile Universal Mini Extrusion requires a 5/8″ wide channel at 1/4″ depth for recessed applications such as stairs, handrails, display shelving and cases, and niche and accent lighting. Choose from frosted UV resistant/flame retardant and 10 degree clear focusing lens, both made of high quality polycarbonate material. Use end caps made of durable polypropylene to finish the look. Standard assembly listed offer IP20 protection; Use a neutral silicone sealant at each end along each side of lens for IP65 rating.