Fiber optic splice boxes typically range from compact sizes around 115 x 61 x 113 mm to larger rack-mounted modules, with weight depending on material and capacity.

Typical Dimensions

• FIMP-M Splice Box (Compact): 115 x 61 x 113 mm, designed for up to 12 fiber splices, suitable for both singlemode and multimode fibers, and available in ATEX-compliant variants for hazardous environments .
• Rack-Mountable Modules: Designed for DIN rail or 19" mounting, these splice boxes have a compact, uniform design with ample interior space for fiber connections. Exact dimensions vary by manufacturer but are generally larger than compact boxes to accommodate more splices .
• Fiber Optic Splice Modules (FOSM): These modules are designed to fit within Panduit rack-mounted enclosures and support 24 fusion splices or 12 mechanical splices per module. Dimensions are provided in inches and metric units in manufacturer datasheets .

Material and Weight Considerations

• Materials: Splice boxes are commonly made from metal or glass-fiber reinforced polyester, providing durability and protection for fiber splices .
• Weight: While specific weights are not always listed, compact boxes like the FIMP-M are lightweight due to their small size and plastic or composite construction. Metal rack-mounted boxes are heavier, typically ranging from 1–3 kg depending on size and number of splices. Weight increases with additional protective features or larger capacity.

Summary

Fiber optic splice boxes vary in size and weight depending on their design and intended application:

• Compact boxes: ~115 x 61 x 113 mm, lightweight, up to 12 fibers.
• Rack-mounted modules: Larger, metal construction, support 12–24 splices or more, heavier.
• Specialized variants: ATEX-compliant or industrial-grade boxes may have reinforced construction, slightly increasing weight.

These specifications help in planning installation space, mounting options, and handling requirements for fiber optic networks .