16524 Lampholder - Plastic Keyless Lamp Holder for Electrical Applications The 16524 Lampholder by Engineered Products Company is a plastic, keyless lamp holder designed for residential and commercial electrical lighting solutions. It is compatible with 3.25” or 4.0” outlet boxes and suitable for use by electrical distributors and switchgear suppliers requiring reliable wire and cable connections for lighting fixtures. This product meets NEC standards and is UL listed for safety and performance. Specifications Body Material: Plastic Operator Type: Keyless, 4-Terminal Fits Outlet Box Size: 3.25” or 4.0” Conductor Size: 7 Inch Conductor Color: Black and White Product Weight: 11 lbs Application: Residential, Commercial, Industrial, Agricultural Approval: UL Listed (Canada and US) Applicable Standard: NEC Articles 410.1, 410.50, 410.51, 410.52, 410.80 (A and B), and 410.122 Features Nickel-plated E26 brass screw shell resists corrosion UV resistant body prevents fading and discoloration Includes corrosion resistant mounting screws Compatible with optional plastic and metal safety cages Meets 2023 National Electrical Code requirements Downloads & Links Specification/Technical Catalog