ALL THE HELPFUL DETAILS RESOURCES FAQ'S Answers to our most commonly asked questions GO Blog Stay up to date on our latest news, products, and more. GO Brochures & Specs Great Northern Door product brochures and spec sheets. GO Care & Maintenance Best practices for cleaning and refinishing your doors to ensure the longest life possible. GO Cost Considerations Cost comparisons to help you choose the door that is right for you. GO Colors & Materials A highlight of the different colors and materials to choose from, including wood species and glass options. GO Tips & How To's Helpful tips and insights to finding and selecting your perfect door/or accessory items. How to measure a garage door How to measure an exterior door How to calibrate adjustable hinges Tips – Garage Door Hardware Configs Tips – Garage Door Finishing