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Therma-Tru Dual Bulb Door Bottom Replacement

Therma-Tru provides a simple tutorial about replacing a dual bulb door bottom. Begin with removing the door bottom and afterwards cleaning the bottom of any residual caulk or staples. Install the new door bottom with caulk on both ends and staple to the door at the ends. Working from the edges of the door to the middle, hand fit the bottom into the grooves along the bottom of the door. Adjust the sill for optimal weather protection.


Updated on May 15, 2021

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