What are the dimensions of a 30 inch led light bar rigid?
Mon 17,2026
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If you are sizing up an LED rigid bar for a sign cabinet or light box, the first number you need is the overall length. A 30 inch LED light bar rigid measures roughly 762 mm from end to end, because 30 inches converts to 762 mm exactly. But length is only one part of the story. The width and the thickness of the bar matter just as much, because they decide whether the bar seats properly in the frame of your light box and how evenly it lights the panel.
Below we look at the typical dimensions of a 30 inch LED rigid bar, how those numbers compare with standard stock sizes, and what to check before you place an order.
What does "30 inch" mean in practice?
The "30 inch" in a product name refers to the overall length of the bar, measured from one end of the housing to the other. In metric terms:
30 inches = 762 mm
Most LED rigid bars sold for signage are produced in metric stock lengths, and 762 mm is not one of the standard sizes. Common stock lengths you will see from manufacturers are 240 mm, 450 mm, 480 mm, 730 mm, 960 mm and 990 mm. A 30 inch bar therefore sits between the 730 mm and 960 mm sizes. If your light box frame is designed around a 30 inch opening, you have three practical options:
- Choose a 730 mm bar and add a small extension or spacer to close the gap.
- Choose a 960 mm bar and cut it down, but only if the model supports cutting.
- Order a custom 762 mm bar through an OEM/ODM program.
Width and thickness: the numbers that decide the fit
Length gets all the attention, but the cross-section of the bar is what determines whether it fits your frame. For LED rigid bars used in light boxes, the typical dimensions are:
- Width: 20 to 25 mm
- Thickness: 13.5 to 16 mm
For example, a common side-light rigid bar measures 450 x 25 x 13.5 mm (length x width x thickness), while a high-power version built for deeper boxes measures 450 x 25 x 14 mm. Slimmer lens bars come in at around 16.5 mm PCB width. If you are replacing an existing bar, measure the channel or groove in your frame first. A bar that is a few millimetres too wide will not seat properly, and one that is too thick can push the diffuser out of alignment.
How depth and application change the choice
The dimensions of the bar are tied to the depth of your light box. For shallow single-sided boxes around 8 to 20 cm deep, a standard side-light bar works well. For double-sided boxes of 10 to 30 cm depth, you typically need a higher-power bar with a narrower beam angle so the light reaches across the full panel without dark corners.
The beam angle is worth checking alongside the dimensions. A wider lens angle such as 20 x 15 degrees suits shorter distances, while a tighter 8 x 15 degree lens pushes light further for deeper boxes. Matching the bar length to the box depth and the lens angle to the box width is what gives you even, shadow-free illumination.
Custom sizes: when stock dimensions are not enough
Because 762 mm is not a standard stock length, many buyers end up needing a custom size. This is where working with a manufacturer directly pays off. A factory with its own production lines can cut bars to your exact length, adjust the width, or supply a custom lens. If you are ordering in volume, a custom 30 inch bar avoids the waste of cutting down longer stock and gives you a cleaner install.
What to check before you order
Before you place an order for a 30 inch LED rigid bar, confirm these four points:
- Overall length in millimetres, including any end caps.
- Width and thickness, to make sure they match your frame channel.
- Voltage, since 12V and 24V are the most common for signage bars.
- Waterproof rating, with IP54 for indoor signs and IP65 or IP67 for outdoor exposure.
Buying from the factory
If you are sourcing a 30 inch LED rigid bar, buying directly from a manufacturer gives you access to custom sizes, OEM/ODM branding and factory pricing. HansonLed, for example, produces a full range of rigid LED light bars for light box side-lighting and back-lighting, and accepts custom size, logo and colour requests. Their standard side-light bars use 3535 LEDs with a lifespan of more than 50,000 hours and carry CE and RoHS certification, and their lens bars can be cut per LED to reach the exact length your project needs.
A quick recap
A 30 inch LED light bar rigid is roughly 762 mm long, with a typical width of 20 to 25 mm and a thickness of 13.5 to 16 mm. Because 762 mm is not a standard stock size, most buyers either combine standard lengths or order a custom cut. Measure your frame channel, confirm the voltage and waterproof rating, and if you need an exact fit, ask the factory about a custom LED light bar rigid before you commit to an order.
