Dahua PFA-137 Metal Weatherproof Junction Box Grey

The PFA-137 and PFA-139 both serve as metal weatherproof junction boxes for Dahua cameras, but they are not interchangeable: the PFA-137 is the larger format, providing a bigger internal cavity for cable management. This additional space is relevant when the cable run includes conduit entry, multiple cables, or a larger connector assembly that does not fit comfortably within the smaller PFA-139.

In grey, the PFA-137 is appropriate for concrete, industrial, and neutral-coloured surfaces where matching the wall colour reduces the visual prominence of the installation. Grey is the natural specification on infrastructure, industrial buildings, precast concrete structures, and any application where the standard white junction box would appear out of place against the building material.

The metal construction of the PFA-137 provides robustness at accessible ground-level positions and in locations where mechanical protection of the cable entry point is a design requirement. Metal does not degrade under UV exposure in the way that some plastic compounds do, and it provides a physically harder surface against incidental contact or deliberate interference.

For CCTV installers across London and the UK working with larger Dahua camera bodies on grey or concrete surfaces, the PFA-137-G provides the correct combination of size, material, and colour for a professional external camera installation.

Key Features

• Larger format metal junction box for bigger Dahua camera housings
• Grey finish for concrete, industrial, and neutral-coloured wall surfaces
• More internal cavity than PFA-139 for larger cable assemblies and conduit entry
• Metal construction with UV and impact resistance for long outdoor service life
• Weatherproof cable entry for fully exposed outdoor camera positions
• Correct specification where PFA-139 is too compact for the installation