Arlington 129 2-1/2" Mast Reducer Service Entrance Cap

Make service-entrance installations quicker and more reliable with the Arlington Industries 129 Mast Reducer Service Entrance Cap. This conduit adapter is designed to reduce a 2-1/2" mast to a 2" cap, giving electricians and contractors a tidy, code-friendly transition point for service entrance and low-voltage runs. Built from corrosion-resistant aluminum and finished in red for easy visual identification, the cap includes multiple knockouts (.453", .75", 1.00") so you can route power, security, surveillance and monitoring cables without custom drilling. A positive set-screw retention holds the cap securely to the mast, reducing movement that can stress connections and compromise system uptime. Ideal for service entrance, CCTV, network and access-control installations, this Arlington Industries mast part streamlines wiring, protects terminations from the elements, and helps keep sites inspection-ready. Specify the 129 mast reducer to simplify conduit transitions on residential and commercial projects—order now or add to your next installation spec for dependable service entrance performance.

• Simplifies service-entrance transitions by reducing a 2-1/2" mast to a 2" conduit for faster, neater installations
• Multiple knockout sizes (.453", .75", 1.00") provide flexible cable entry for security, surveillance and low-voltage wiring
• Set-screw retention secures the cap to the mast, minimizing movement and maintaining reliable service connections
• Durable aluminum construction resists corrosion for long-term outdoor performance and inspection compliance
• Bright red finish improves visibility for quick site identification and streamlined maintenance