Back Boxes & Pattress Boxes – Comprehensive Guide to Electrical Mounting Boxes
Find the right back box or pattress box for your installation. Our range includes 25mm, 35mm and 47mm depths, available in single or double sizes, all fully compliant with UK regulations. Perfect for sockets, switches, and spurs.
Discover our versatile range of back boxes and pattress boxes for plug sockets and switches. Our collection includes durable and reliable options to accommodate your electrical installations, whether they are for a home or a commercial property. From back boxes for sockets (including double socket back boxes) to electrical boxes for light switches, we have you covered. Whether you need plastic back boxes, pattress boxes, or socket boxes, trust ACAS Electrical to provide high-quality products for your electrical projects.
Our range includes a selection of surface back boxes, metal socket boxes and dry lining boxes for all purposes. Read our comprehensive guide to the different kinds of back boxes available for more help.
What Are Back Boxes?
Back boxes are recessed electrical boxes installed inside walls or ceilings to house wiring and fittings like switches and sockets. They come in various depths — typically shallow or deep — depending on the wiring requirements and wall thickness. Shallow back boxes are ideal for drywalls and thin partitions, while deep back boxes provide extra space for multiple cables or larger fittings.
What Are Pattress Boxes?
Pattress boxes are surface-mounted electrical boxes fixed directly onto the wall or other surfaces. Unlike back boxes, they do not recess into the wall, making them easier to install where wall cavity depth is limited or where surface mounting is preferred. They are commonly used for retrofitting or in solid walls where chasing out space for a back box is difficult.
Types and Applications
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Metal Back Boxes: Used for durability and grounding in commercial or industrial installations.
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Plastic Back Boxes: Lightweight and corrosion-resistant, perfect for residential use.
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Single, Double, and Triple Pattress Boxes: To accommodate one or multiple switches or sockets on the surface.
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Round and Square Pattress Boxes: Designed for different fitting shapes, such as light fittings or outlets.
FAQs
Q: What’s the difference between a 25mm and 35mm back box?
A: 25mm is standard for most switches; 35mm is recommended for sockets with USB or dimmers needing extra depth.
Q: Do these boxes come with fixing lugs?
A: Yes, most models include adjustable lugs for secure fit.
Why Use Back Boxes and Pattress Boxes?
These boxes protect electrical connections, reduce fire risk, and provide a secure mounting point for switches, sockets, and other devices. Choosing the correct box type ensures compliance with electrical safety regulations and facilitates easier maintenance or future upgrades.
Order back boxes and pattress boxes today for next-day UK delivery and competitive trade prices.
