Adapter plates make it possible to use our Design-a-Flanges in different manufacturers enclosures, even if they do not have FL13 or FL21 size openings. Material: 1,5mm sheet steel plate Color: RAL 7035, powder coated 221x90 - Rittal “size 2” 330x90 - Rittal “size 3” 339x149 - Rittal “size 4” 534x149 - Rittal “size 5” If the current adapter plates do not fit the enclosure you are using please contact us and we’ll be happy to help.