5" Square Pole? Same Problem, Bigger Adapter, Same Solution.
Vertical tenon adapter for 5-inch square poles with 2" slip fitter tenon output. For retrofit projects on larger existing pole infrastructure — the adapter drops in, the fixture slides on, done.
5" Square Pole Conversion
Fits inside 5" (127mm) square poles — the larger size common on arterial roads and highway interchanges. Outputs standard 2" (50.8mm) slip fitter.
Concealed Installation
Adapter sits inside the pole. No visible brackets or external clamps. Clean professional appearance maintained.
Bronze Powder Coat
Corrosion-resistant metal construction. M8 set screws for secure, vibration-resistant mounting.




