British Standard Steel Box (CTM-BX-UK) is a electrical metal boxes from Cable Tray Master.
British Standard Box · One-stop supply
Flush back boxes to the British pattern
Pressed steel flush-mounting back boxes, the knockout boxes that sit behind wall switches and sockets on British-standard installations. The pattern is described by BS 4662, in the common single- and double-gang sizes and 25, 35 and 47 mm depths, with knockouts for cable and conduit entry.
- Pattern per BS 4662
- Single- and double-gang, 25/35/47 mm
- Pressed steel, pre-galvanized
We reply within one business day with sizes, price and lead time.
Why Cable Tray Master
A manufacturer you can buy direct from, and audit
Cable Tray Master is a cable tray manufacturer and exporter under one owner. We make the tray on our own line in China and ship it with our own export team, so the price is factory-direct, the specification is made to order, and buyers are welcome to visit and audit the plant.
The British back-box family
Single- and double-gang flush back boxes in the common 25, 35 and 47 mm depths, so the box suits the wall build-up and the accessory being fitted, in the pattern BS-standard switches and sockets are made to screw into.
Knockouts where you need them
Knockouts around the box open only the cable or conduit entries the installation needs, keeping the rest of the box closed and tidy.
One contact for boxes and conduit
Supplied alongside the conduit and cable tray, so the boxes come from the same supplier as the run that feeds them.
What the CTM-BX-UK is, and who it is for
British standard back boxes are the pressed steel boxes that sit flush in a wall behind a switch, socket or accessory on UK-pattern installations. They are the metal knockout boxes an electrician screws the faceplate onto, sized so that BS-standard accessories fit and the wiring has room behind the plate. The pattern and dimensions are described by BS 4662.
We supply the boxes in the common single- and double-gang sizes and the 25, 35 and 47 mm depths that suit different wall build-ups, in pre-galvanized pressed steel with knockouts for cable and conduit entry. Sizes, depths, finish and any product-specific certification are confirmed with you per order and per destination market, and we supply them alongside the conduit and cable tray they connect to.
Specifications
Technical specifications
Confirmed per order. We send the full spec sheet, including sizes, thickness and finish, before you buy.
| Type | British standard steel back box (knockout box) |
|---|---|
| Standard reference | Product type described by BS 4662 |
| Common sizes | Single- and double-gang |
| Common depths | 25 / 35 / 47 mm (typical, confirm per order) |
| Conduit entry | Knockouts |
| Material | Pressed steel |
| Surface Finish | Pre-galvanized |
| Certification | Product-specific, available on request |
| Origin | Made in China |
| MOQ | Confirm on inquiry |
Sizes, depths, finish and any product-specific certification are confirmed per order and per market. The standard named describes the product type, not a certification claim; our cable tray CE and UL certificates do not apply. Request the full specification before ordering.
Built to do the job on site
Single- and double-gang
The common British gang sizes so the box matches the switch or socket being fitted.
25 / 35 / 47 mm depths
Common depths to suit different wall build-ups and accessory requirements.
Knockouts for entry
Knockouts open only the cable or conduit entries the installation needs.
Pre-galvanized steel
Pressed steel with a pre-galvanized finish for flush and concealed mounting.
Sourcing & Trust
Where this tray comes from, in plain terms
We would rather tell you exactly what we are than dress it up. Here is the honest picture of who makes the tray and what we can document.
One-stop electrical supply
We supply British standard boxes alongside our conduit and cable tray range, so buyers source boxes, conduit, tray and support from one contact and one shipment.
Sizes and certifications on request
Box sizes, depths, finish and any product-specific certification are confirmed per order and per destination market. Tell us the standard your project requires and we share what applies.
Export-experienced packing
Packed and crated for the container the way we already ship cable tray orders overseas, with international shipping marks.
British standard boxes are part of our one-stop electrical infrastructure range. The standard named describes the product type; it is not a Lonrace certification claim. Product-specific certification is confirmed on request, and our cable tray CE and UL certificates do not apply to this line.
Downloads
Catalogue, datasheet and guides
Everything your buying team needs to spec and quote the tray. Ask us for anything not yet posted and we will send it the same day.
Full Product Catalogue
The complete Cable Tray Master range, cable management and electrical infrastructure.
Request a copyFrequently Asked Questions
What British box sizes do you supply?
What standard do they follow?
What finish are they supplied in?
Can I order them with matching conduit and tray?
Get a quote for CTM-BX-UK
Tell us the width, finish, quantity and destination. We reply within one business day with the section, price and lead time.
