The Deca CEP2 DIN rail terminal block end cover is made to be used with the Deca CTR2.5, CTR4, CDU16, or CDU35 screw clamp, and CTR2.5D or CTR4D diode DIN rail terminal blocks. They can be used as partition plates to separate sections of terminal blocks. Dimensions: 55.5mm Width x 51mm Height (2.18" x 2"). Note: Image is for reference, actual part may differ