Appleby SB638 Combined 1 Gang + 2 Gang 35mm Dry Lining Box

The Appleby SB638 combined 1 gang + 2 gang 35mm dry lining box is a practical installation component for professional electrical work in domestic, commercial and refurbishment projects. Its 35mm format and 1 gang + 2 gang configuration make it straightforward to match the box or accessory to the intended wiring device before installation.

The published dimensions are 228 x 83 x 36mm, helping installers check wall space, cut-out planning and accessory compatibility before ordering.

The flame-retardant thermoplastic body uses adjustable nylon lugs with broad bearing faces to grip plasterboard securely.

A wide front flange helps prevent the box slipping into the cavity and aligns neatly with the accessory plate.

Cable access is provided by side entries and 25mm base knockout. Appleby specifies the dry lining range for board thicknesses from 6.35mm to 15mm.

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 SB638; check the code carefully when matching it to an existing specification or repeat order.

Key Features

• Appleby product code SB638
• 1 Gang + 2 Gang format
• 35mm depth
• 228 x 83 x 36mm published size
• side entries and 25mm base knockout
• adjustable nylon lugs
• Designed for professional electrical installation

Technical Specification