https://trade-britanica.trade/....wiki/10_Bifold_Repai
How to Prepare an Opening to Replace Bifold Doors If you're looking to replace your bifold doors, it is important to choose the right ones. Make sure are properly sealed and weatherproofed to prevent air leaks, water infiltration and colder indoor temperatures. For a seamless installation, ask a friend to help you. The kit should be approximately 1/8 inch narrower than the frame opening and between 1 and 2 inches shorter on height to ensure you have enough clearance for the floor. Choosing the right doors