4 port mini ODF indoor terminal applied in the FTTX network to connect the drop cable and optical devices through fibre port. VTB20 covers the capacity of 1core, 4cores and 8 cores and supports splicing, mechanical connection and FMC, wall mounted installation StandardsYOTB-4A Metal Optical Terminal Box, also known as OTB, is made of cold-rolled steel. Fiber splicing, splitting and distribution can be done in this box, and at the same time, it. *Total enclosed structure, be in nice shape; *Material: PC+ABS, wet-proof, water-proof, dust-proof, anti-aging, protection level up to IP65; *Clamping for feeder cable and drop cable, fiber splicing, fixation, storage, distribution.