Do Door Sweeps go on the inside or the outside of the door?

A majority of Door Sweeps should be installed on the inside of the door, since most entry doors are “in-swinging” doors. A door sweep attached to the outside of the door would be only be used for an “out-swinging” door.

A good rule of thumb: you don’t want the door sweep to cross the threshold when the door is in motion.

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