External Dimensions - Mitsubishi Electric MELSEC-F FX3G Series User Manual

FX Series Programmable Controllers
16 Input/Output Extension Blocks
3G
User's Manual - Hardware Edition
16.3 FX2N-8ER (24V DC Sink Input, Relay Output)

16.3.3 External dimensions

2- 4.5 mounting holes Unit:mm(inches)
9(0.36")
43(1.7")
87(3.43")
256