Circular Dry Lining Installation Box with 2 x 20mm Knockouts 35mm
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The Appleby SB639 is a high-quality circular dry lining back box, ideal for flush mounting applications. Designed with a 35mm depth, it is made from flame-retardant thermoplastic and features tough yellow nylon lugs with large bearing faces for superior strength. The large flange around the front prevents slipping into the cavity and aligns perfectly with accessory front plates. With a 25mm base knockout and two side cable entry points, this back box accommodates board thicknesses ranging from 6.35mm to 15mm, and includes a brass earth terminal for enhanced safety.
Technical Specifications
- Material: Flame-retardant thermoplastic
- Diameter: 80 mm
- Depth: 35 mm
- Number of Entry Points: 2
- Base Knockout: 1 x 25mm
- Cable Entry Points: 2 side entries
- Brass Earth Terminal: Yes
- Flush Mounted: Yes
- Housing Feed-through by Break-out Opening: Yes
- Clamp Position Fixed: No
- Transparent Cover: No
- With Screws: No
- Halogen Free: No
- Sealable: No
The Appleby SB639 back box provides a robust and reliable solution for electrical fittings, offering strength, safety, and ease of installation in both residential and commercial settings.