(4 Pack) Airmont Products 4" Square Electrical Box Extension Ring, 1-1/2" Deep, 21 Cu. in., Galvanized Steel, (8) 1/2" & (4) 3/4" Knockouts, UL Listed

(4 Pack) Airmont Products 4" Square Electrical Box Extension Ring, 1-1/2" Deep, 21 Cu. in., Galvanized Steel, (8) 1/2" & (4) 3/4" Knockouts, UL Listed

• EXPAND WIRING CAPACITY WITH EASE – Designed to extend existing 4-inch square junction boxes while adding valuable space for conductors, splices, and wiring devices. The 1-1/2-inch deep design provides an additional 21 cubic inches of capacity, making it ideal for remodels, upgrades, and complex electrical installations.
• HEAVY-DUTY DRAWN GALVANIZED STEEL – Constructed from durable galvanized steel using a drawn design for added strength and rigidity. Built to withstand demanding residential, commercial, and industrial environments while providing long-lasting corrosion resistance and dependable performance.
• VERSATILE KNOCKOUT CONFIGURATION – Features (8) 1/2-inch side knockouts and (4) 3/4-inch side knockouts to accommodate multiple conduit and cable routing options. Provides flexibility for a wide range of wiring methods and installation requirements.
• IDEAL FOR JUNCTION BOX EXTENSIONS – Perfect for increasing box fill capacity, extending existing electrical boxes, and creating additional access for conduit runs and electrical wiring. Suitable for lighting circuits, receptacle installations, junction boxes, and other branch circuit applications.
• UL LISTED FOR SAFETY AND CODE COMPLIANCE – Manufactured to meet recognized electrical safety standards for dependable installation performance. Designed for professional-grade reliability and peace of mind on every project.
• AIRMONT PRODUCTS QUALITY – Built for electricians, contractors, and professionals who demand durable electrical boxes, junction box extenders, and electrical housing solutions that perform on the job. Airmont Products delivers trusted quality, dependable construction, and installation-ready convenience. Electricians know us, and we know electricians.