Appleby SB646 3 Gang 35mm Flush Steel Back Box

The Appleby SB646 3 gang 35mm flush steel back box is a practical installation component for professional electrical work in domestic, commercial and refurbishment projects. Its 35mm format and 3 gang configuration make it straightforward to match the box or accessory to the intended wiring device before installation.

The published dimensions are 189 x 68.3 x 35mm, helping installers check wall space, cut-out planning and accessory compatibility before ordering.

Manufactured as a flush steel box, it provides a robust mounting point behind a compatible wiring accessory.

The design includes fixed lugs and 18 x 20mm knockouts, giving useful options for cable routing and secure accessory alignment. It is suited to concealed installations where a durable metal enclosure and an orderly first-fix result are required.

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 SB646; check the code carefully when matching it to an existing specification or repeat order.

Key Features

• Appleby product code SB646
• 3 Gang format
• 35mm depth
• 189 x 68.3 x 35mm published size
• 18 x 20mm knockouts
• fixed lugs
• Designed for professional electrical installation

Technical Specification