Maybe it may closed completely or might not shut safely. Whatever the reason, you might probably know when something is wrong with garage door Residential Garage Door Repair Saint Albert The pressure setups work as a second security mechanism in the event of safety sensing unit failure. Improperly changed force http://garagedoorofftrackrepairn01109.ampedpages.com/Getting-The-Residential-Garage-Door-Repair-Sherwood-Park-To-Work-29417686