How-To Videos Find your How-To Videos here for all of BetterDoor's Products. #DoorDIY: How to Install a Corner Pad #DoorDIY: How to Adjust an Adjustable Sill #DoorDIY: How To Install Weatherstrip/Weathersealing #DoorDIY: How To Install a Sill Pan to Protect Your Entryway #DoorDIY: How To Cut Down and Install the Ultimate Flip Lever Astragal (French Door Lock) #DoorDIY: How to Repair a Rotted Door Frame Using FrameSaver Jamb Rot Repair Kit #DoorDIY: How To Install JambAid