Correct measurements

The red arrow above demonstrates an 'Outside Edge' measurement, whilst the blue arrow displays a 'Dart Center' measurement. To learn more about these measurements please view our measurement guide. But don't forget, if you have any questions, please call us or send us a photo and we can help with any measurement or profile identification.

• Check the height of your new seal especially on the hinge side where its less forgiving.
• Make allowances for any distortions on the original seal due to it being worn.