4" Square Pole? This Adapter Gives It a Standard Tenon.
Vertical tenon adapter that drops inside a 4-inch square pole and provides a standard 2" slip fitter tenon on top. When the poles are square and the fixtures need round tenons, this is the bridge — clean, concealed, weather-proof.
Square-to-Round Conversion
Fits inside 4" (101.6mm) square poles, outputs a standard 2" (50.8mm) slip fitter tenon. No external hardware visible after installation.
Internal Fit Design
Drops into the pole top for a clean, integrated appearance. Concealed adapter maintains the pole's original aesthetic.
Bronze Weatherproof Finish
High-grade metal with bronze coating. M8 set screws secure the adapter against wind and vibration loads.
