Dimensions of the splice box

Splice boxes come in various sizes depending on type, ranging from compact wall-mounted units (220 x 150 x 50 mm) to 19" rack-mounted boxes (447 x 43.65 x 233 mm).

Wall-Mounted Splice Boxes

A typical internal customer splice box is 220 mm wide, 150 mm high, and 50 mm deep. It accommodates cables up to 13 mm in diameter with a standard cable gland, or up to 18 mm using a port adapter. These boxes usually include one splice tray, pigtails, adapters, and splice protectors, and are designed to provide water and gas sealing at the cable entry point (optional quick-set resin) for secure installation .

19" Rack-Mounted Splice Boxes

Industrial 19" rack splice boxes, such as the FP-19 model, are 447 mm wide, 43.65 mm high (1U), and 233 mm deep. They can be equipped with various adapters (ST, SC, LC, E2000) and support multiple pigtail configurations, including 6, 12, or 24 singlemode fibers. These boxes are compact solutions for rack-mounted fiber distribution .

DIN Rail Splice Boxes

DIN rail splice boxes are designed for compact network terminal distribution. They can support 4, 8, 12, 24, or 48 cores depending on the adapter plate configuration (ST, SC, LC, FC). While exact external dimensions vary by model, these enclosures are generally smaller than rack-mounted units and optimized for installation on DIN rails in limited spaces .

Additional Considerations

• Cable entry: Standard cord grips accommodate diameters from 4.3 mm to 12 mm, with larger grips for 11–18 mm cables .
• Internal bend radius: Most splice boxes maintain a minimum bend radius of 30 mm for fiber management .
• Material and mounting: Wall-mounted boxes are typically plastic or metal, while DIN rail boxes are metal for secure attachment. Rack-mounted boxes are designed for standard 19" racks. These specifications help ensure proper installation, fiber management, and compatibility with network infrastructure.