Appleby SB639 1 Gang 35mm Circular Dry Lining Box

The Appleby SB639 1 gang 35mm circular dry lining box is a practical installation component for professional electrical work in domestic, commercial and refurbishment projects. Its 35mm format and 1 gang configuration make it straightforward to match the box or accessory to the intended wiring device before installation.

The published dimensions are 80mm diameter, helping installers check wall space, cut-out planning and accessory compatibility before ordering.

Designed for dry lining work, the flame-retardant thermoplastic construction and dry lining fixing arrangement support a tidy cavity-wall installation.

The circular body uses 2 x 20mm knockouts, while the 63mm cut-out and published outside diameter help with accurate preparation.

The format is intended for compatible circular or single-gang applications where a conventional rectangular box is not appropriate.

For best results, confirm the accessory size, cable-entry requirements and wall construction before fitting.

Installation should be completed by a suitably competent person in accordance with current wiring regulations and project requirements.

This listing refers to product code SB639; check the code carefully when matching it to an existing specification or repeat order.

Key Features

• Appleby product code SB639
• 1 Gang format
• 35mm depth
• 80mm diameter published size
• 2 x 20mm knockouts
• dry lining fixing arrangement
• Designed for professional electrical installation

Technical Specification