Top tip: Don’t be swayed by marketing claims of ‘premium grade’ or ‘superior’ aluminium extrusion—these aren’t actually giving you a more premium product. Ask what the technical specifications of the aluminium are and then compare them with those of other brands. You’ll find that they’re nearly always the same. If you need further clarification, feel free to reach out to us.
Some circumstances, depending on the size and complexity of the profile, make it difficult to improve the tolerance as outlined in BS EN 755.