4″ Reducing Collar
The Smooth 4″ Reducing Collar can be used with any 4″OD smooth post to accept a 3″ID lamp collar.
Used with 4″OD Smooth Colonial post series (EPC4S)
3 set screws included with the reducing...
The 3.5″ Reducing Collar can be used with any American Gas Lamp Works 3.5″OD smooth post, to accept a 3″ID lamp collar.