How to Choose the Right Edge Trim Size
Last updated: March 2026
Quick Answer
Measure your panel thickness in mm, then select edge trim with a grip range that includes your measurement. For a 2mm panel, choose trim rated for 1-3mm grip. Always size up if between sizes.
Step-by-Step: Measuring for Edge Trim
Step 1: Measure the thickness of your panel, sheet metal, or edge using callipers or a ruler.
Step 2: Check the edge trim grip range specification.
Step 3: Ensure your panel thickness falls within the grip range.
Step 4: Consider the bulb/seal dimension for protection width needed.
Edge Trim Sizing Chart
| Panel Thickness | Recommended Grip Range | Common Applications |
|---|---|---|
| 0.5mm - 1mm | 0.5-1.5mm trim | Thin sheet metal, panels |
| 1mm - 2mm | 1-2mm or 1-3mm trim | Vehicle body panels, cabinets |
| 2mm - 3mm | 2-4mm trim | Industrial panels, enclosures |
| 3mm - 5mm | 3-5mm or 4-6mm trim | Heavy machinery, thick panels |
| 5mm+ | 5-8mm or custom | Structural edges, thick glass |
Types of Edge Trim
U-Channel Edge Trim
Basic edge protection without sealing. Clips onto panel edges to protect from cuts and abrasion. Available in PVC or rubber.
Edge Trim with Top Seal
U-channel base with bulb seal on top. Provides edge protection plus sealing against adjacent surfaces.
Edge Trim with Side Seal
U-channel with seal projecting sideways. Ideal for door frames where seal must contact a closing door.
Steel Core Edge Trim
Contains galvanised steel wire for stronger grip. Essential for high-vibration environments like vehicles and machinery.
Frequently Asked Questions
Does edge trim need adhesive?
Most edge trim uses mechanical grip (steel wire core) and requires no adhesive. For smooth or irregular surfaces, adhesive-backed options are available.
Can edge trim go around corners?
Yes. For gentle curves, rubber edge trim flexes naturally. For tight corners, cut a V-notch on the inside of the bend. EPDM offers better flexibility than PVC.
What material edge trim should I use?
Use EPDM for outdoor/UV exposure. Use PVC for indoor and cost-sensitive applications. Use steel-core for vibrating machinery and vehicles.
How do I install edge trim?
Push onto panel edge starting at one end. Use soapy water or silicone spray as lubricant. Ensure trim seats fully with consistent pressure throughout.