The Economy 45 Extrusion hides in small places where a wash of light is needed. Right angled mounting areas need 3/4″ clearance on both sides to accommodate the extrusion. Common applications include cabinets, display cases, shelving, and art niches. Polypropylene lens is included. Use end caps made of durable polypropylene to finish the look. Standard assembly offers IP20 protection; Use a neutral silicone sealant at each end and along each side of lens for IP65 rating.