Coughtrie PW15 Lantern Installations

The Coughtrie PW15 is a globe-like bulkhead for GLS lamps. It made it's debut in the 1960s, where it has seen common domestic use ever since. These bulkheads are still in production (although the newer design is slightly different) and offer a clear diffuser or an opal diffuser.

Birmingham

The Royal Suite off Canterbury Road is home to several abandoned Coughtrie bulkheads. One of these is a PW15 for GLS lamps. This appears to be a newer model.