As a homeowner, you should reset the opener to prevent outsiders from opening the door with a remote that's set to a Liftmaster default code. A simple procedure allows you to reset the opener for one or more remotes.
doorsill - the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway. doorstep, threshold. 1  doorway, room access, door, threshold - the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close; he stuck his head in the doorway.
SPECIFICATIONS FOR ALUMINUM DOOR ENTRANCES. SECTION 08410 ALUMINUM ENTRANCES AND STOREFRONTS. This suggested guide specification has been developed using the current edition of the Construction Specifications Institute (CSI) âManual of Practice,â including the recommendations for the CSI 3 Part Section Format and the CSI Page Format.