Non-Threaded Uno Type Shades:
- These shades commonly have a flat washer with a non-threaded hole for mounting.
- Hole sizes vary between American and European Design Shades.
- American (E26) Uno Ring Sockets work with 1-3/8" to 1-1/2" Non Threaded Shade holes.
- European (E26 or E27) Uno Ring Sockets work with 1-5/8" to 1-3/4" Non Threaded Shade holes.
Shade Washers can be used to hold a shade with a larger hole.
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