150mm dia Metal Spigot plate square ventilation galv steel ducting fitting 6" | eBay
Avenger F301 Baby Wall Plate – Thomann Ireland
Helios FSK Circular spigot plate
Square 'SYDNEY STYLE' Spigot with a Round Base Plate. (Only used to match existing spigots or if a round base plate is required) - Includes a Square Cover Plate! - Fence Guru
A.C. Lighting Inc. - Entertainment Lighting Technologies | Avenger 3'' Baby Plate with 16mm spigot