Please consider this fittings guide to planning your lampshade. We really are bespoke so we have the facilities and expertise to replicate, remake and refurbish all practical sizes and styles of lampshades. If in doubt take some photographs. We can discuss these with you and confirm the dimensions we need.
Fittings

Top Fitting / Ceiling Pendant
Washers can be 42mm (ES), 28mm (BC or SES) or 20mm (SBC). Please stipulate how low you would like the washer to be set.

Duplex
Used with a shade carrier.

Fixed Gimble
Wired from the top. Washers can be 42mm (ES), 28mm (BC or SES) or 20mm (SBC). Please stipulate how high you would like the washer to be set.

Base Fitting
Washers can be 42mm (ES), 28mm (BC or SES) or 20mm (SBC). Please stipulate how high you would like the washer to be set.

Finial
This is used with US harps or a US finial rod system. The fitting on the lampshade is often set straight across or dropped down by a little. Please specify.

Candle Clip Fitting
Can be set straight across the top or dropped down as required. Please specify.
Carriers

Carrier Fittings
Use shade with duplex fittings. Carriers come with either a 42mm (ES) washer or a 28mm (BC) washer.
Washer Sizes

FINIAL (US Fitting)
10mm Internal Diameter

SBC (Small Bayonet Cap)
20mm Internal Diameter

BC (Bayonet Cap) or
BRITISH STANDARD
SES (Small Edison Screw)
28mm Internal Diameter

ES (Edison Screw / European Standard)
42mm Internal Diameter