3.5″ Reducing Collar
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.
Used with 3.5″OD x 2.90″ID smooth posts
Slides into the post and secures to...
The Smooth 4″ Reducing Collar can be used with any 4″OD smooth post to accept a 3″ID lamp collar.