Plastic Enclosures for Modular and Compact Range Empty plastic enclosures for both the ABB modular and compact range of operators. The enclosures are available from 1 to 4 seat and give the option to mount up to 5 contact blocks to one operator. Grey or yellow versions available 1 to 3 seat enclosures: M20 and PG 13.5 / PG16 and (M20) holes for cable glands 4 seat enclosures: M25 / PG 16 and (M20) holes for cable glands Supplied with stainless steel screws. Enclosures Enclosures featured come with 22mm holes unless otherwise stated.