How to Choose the Right Gas Struts for Canopies, Toolboxes, and Enclosures

When it comes to ute canopies, toolboxes, and storage enclosures, getting the gas struts right from the start makes all the difference to performance and safety. Whether you’re replacing worn-out struts or planning a new fit-out, here are the key things to know:

Measure the Drop Length

Start by measuring the vertical distance (the “drop”) from the hinge point to the opening edge of your door or lid. A good rule of thumb is to pick a strut with a length that’s approximately half the drop length.

Mounting Points Matter

Ensure your struts are mounted in the correct position. Typically, the mounting point should be slightly less than the stroke length of the strut away from the hinge. For example, a 535mm strut with a 220mm stroke should be mounted around 200–210mm from the hinge point.

Work Out the Force Required

The pressure in your gas strut (measured in Newtons) needs to match the weight of your door or lid at the mounting point. A simple bathroom scale trick can help:

• Open the lid to 90°
• Support it with a stick at the mounting position
• Measure the force (in kg)
• Convert kg to Newtons (1kg ≈ 10N)

For example:
A 45kg reading = 450N total force. If you're using two struts, you can halve the pressure per strut. Always allow a margin for factors like temperature fluctuations.

Correct mounting ensures smooth, reliable operation and prevents premature wear.

Need Help?

Ovesco’s team are experts in helping you choose the right gas struts, not just for cars, but for trailers, toolboxes, canopies, and more. Drop into the store, give us a call on 1300 290 359, or download the fact sheet.