This plate filler is more easily concealed than the standard bayonet filler. It has a 90°, 8mm outlet and a 22mm thread for a filler adaptor. The brass plate is 50mm square and the plastic cover adds about 1mm on each side. However, since it requires an adapter to fill up anywhere, it does not meet UKlpg CoP 11 standards. Supplied with a 22mm bayonet adaptor.