How to Assemble and Mount a 76mm Post Extension

This guide covers the assembly and installation of our 76mm Post Extension, available in Traffic Grey, RAL 9016 White, 9005 Black, or mill finish. Ashby Trade Sign Supplies’ 76mm Post Extension allows you to increase the height of existing sign posts, giving extra clearance for signage or supporting additional panels. Designed for quick and secure fitting, the extension slots neatly into place and clamps tight with a grub screw. Follow the instructions below for a smooth installation.

A downloadable PDF of this guide, with images, is available at the top-right of this page.

Tools & Parts Required

76mm Post Extension (supplied)

Grub screw (supplied, pre-fitted)

Allen key or suitable tool for tightening grub screw

Post cap or finial (existing or new, as required)

Step-by-Step Assembly Instructions

1. Prepare the Existing Post

Remove any existing post cap or finial from the top of the 76mm post. This ensures the extension can slot in correctly.

2. Fit the Post Extension

Slide the 76mm Post Extension into the top of the existing post. Make sure it is seated firmly.

3. Tighten the Grub Screw

Use an Allen key (or compatible tool) to tighten the grub screw, clamping the extension securely into position. This prevents movement once the signage is mounted.

4. Insert the Cap

Place the cap or finial into the top of the extension to seal it off and provide a finished look.

5. Install Signage

With the extension in place, your posts are ready for signage.

Final Checks

Ensure the grub screw is tight and the extension cannot rotate or lift.

Confirm the post cap or finial is fitted securely.

Verify that the extension is aligned straight with the original post.

Need Help?

Contact our team weekdays 8am–6pm on 0118 981 5343, or email sales@ashbytrade.co.uk.