To replace that cracked or worn Hormann garage door weather seal, choose the right Hormann garage door bottom weather seal for the job at North Shore Commercial Door. Our downloadable product manuals will offer specifics that will help you determine what model of insulating Hormann garage door weather seal to order. For example, Hormann's astragal seal is a U-shaped T-seal, for use with retainers that have two tracks. Garage door weather seals keep out dirt, dust, pests and water than can damage your garage and its contents. Weather seals also help prevent heat in summer and cold drafts in winter from entering your garage, which can help you save on energy bills. Measure the bottom length of your door to order only the length you need. We can help you keep your garage door in good working order with our discount-priced tools and parts.at a company with more than 35 years of expertise in the garage door and gate industry. Also shop our affordably priced gate and door opener remotes and receivers.