A Deeper and Thicker Metal Knockout Box
The M&K 46mm 1.0mm Metal Knockout Box with Center Support Bar is developed from the 35mm center-support model for installations that require both more internal wiring space and a firmer box body.
It retains the fixed center support bars used across wider multi-gang configurations, while increasing the box depth to 46mm and the metal body thickness to 1.0mm. The deeper structure provides additional room for wiring, the thicker body improves rigidity, and the center support bars reinforce the wider sections of the box.
Key Features
46mm Deep Box
The greater box depth provides more internal room for wiring arrangement, cable bends and the installation of deeper switches or sockets.
1.0mm Metal Body
The thicker 1.0mm box body provides greater rigidity than a regular thinner configuration and supports a firmer installed structure.
Fixed Center Support Bars
One or more support bars reinforce the middle of wider multi-gang boxes and help reduce flex across the open span.
Pre-Punched Knockouts
Knockouts on the selected box panels provide prepared cable and conduit entry points according to the required wiring layout.
Three Structural Advantages in One Box
More Internal Depth
The 46mm depth provides more space for wiring and installed electrical accessories than the 35mm model.
Greater Body Rigidity
The 1.0mm metal body makes the box structure firmer during handling, wall fitting and accessory installation.
Reinforced Wider Sections
Fixed center support bars connect and reinforce the wider multi-gang sections, providing additional support across the box.
Comparison with the 35mm Center-Support Model
| Feature | 35mm Model | 46mm 1.0mm Model |
|---|---|---|
| Box Depth | 35mm | 46mm |
| Body Thickness | Selected by standard model | 1.0mm |
| Center Support | Included in multi-gang configurations | Included in multi-gang configurations |
| Internal Wiring Space | Regular wiring space | Increased wiring space |
| Structural Focus | Center reinforcement | Greater depth, thicker body and center reinforcement |
Product Specifications
| Item | Specification |
|---|---|
| Product Name | 46mm 1.0mm Metal Knockout Box with Center Support Bar |
| Related Product Terms | Deep Metal Back Box / Heavy-Gauge Metal Knockout Box |
| Box Depth | 46mm |
| Body Thickness | 1.0mm |
| Main Structure | Deep metal box with fixed center support bars |
| Structural Benefit | Greater rigidity and firmer multi-gang box support |
| Support Bar Quantity | One or more according to box width and gang configuration |
| Box Formats | Single-gang, two-gang, three-gang and other available configurations |
| Knockout Layout | Knockout diameter, quantity and position selected by model or drawing |
| Material and Finish | Metal construction; material grade and surface finish confirmed with the selected model |
| Typical Installation | Concealed or flush-mounted switch and socket installation |
When to Choose This Deeper Model
- The 35mm model does not provide enough internal wiring space
- A 1.0mm metal body is required for greater box rigidity
- A wider multi-gang box requires fixed center reinforcement
- The installed switch or socket requires additional rear clearance
- More space is needed for cable bends and wiring arrangement
Information Required for Model Selection
Please confirm the following information:
- Required gang format and external box dimensions
- 46mm depth confirmation
- 1.0mm body thickness confirmation
- Number and position of center support bars
- Knockout diameter, quantity and cable entry positions
- Switch or socket fixing arrangement
- Required surface finish, branding and packaging
Existing Models and Custom Specifications
M&K already offers established deep metal knockout box configurations covering common gang formats, support-bar arrangements and knockout layouts. We first compare your requirements with these existing models and recommend the closest suitable configuration.
If an existing model does not match the required dimensions or installation structure, the gang layout, knockout arrangement, center support position, finish, branding and packaging can be confirmed against a drawing or sample.
Choose the Appropriate Box Structure
35mm Metal Knockout Box with Center Support Bar
For installations that need center reinforcement but do not require the additional 46mm depth.
Standard Metal Knockout Box
For regular box configurations without center reinforcement or increased depth.
Metal Knockout Box with Heavy-Duty Fixing Screw
For requirements focused on a more substantial supplied fixing screw.
Metal Knockout Box with Adjustable Lug and Brass Standoff
For installations where adjustable positioning and the brass standoff structure are required.
Frequently Asked Questions
What is the main difference between the 35mm and 46mm models?
Both models can use center support bars. This model increases the depth to 46mm and uses a 1.0mm metal body, providing more wiring space and greater structural rigidity.
Does the deeper box alone make the structure stronger?
The greater depth mainly provides more internal space. The improved rigidity comes from the combination of the 1.0mm metal body and the fixed center support bars.
How many center support bars are used?
The quantity depends on the box width and gang layout. Wider multi-gang configurations can use additional center support bars.
Is the 1.0mm thickness standard for this product?
Yes. This product page is specifically positioned around the 46mm depth and 1.0mm body thickness. Other thickness requirements should be confirmed as separate specifications.
Can the knockout and gang configuration be changed?
We first recommend an existing M&K configuration. If it does not meet the installation requirement, the box layout can be confirmed against a drawing or sample.
Confirm Your Deep Box Configuration
Send us the required gang format, box dimensions, knockout layout and center support arrangement. We will first match your requirements with an established 46mm, 1.0mm M&K model and confirm any necessary adjustments.
