121 mm to 12 in.
Reverse garage doors with low headroom installation.
This option helps provide more vertical space in the garage.
In order to install torsion spring hardware we recommend a clearance of 12 in.
For door heights with 41 2 of headroom not listed in table 1 take height of door in inches and subtract 12 for 12 radius or 151 2 for 15 radius to get reduced vertical track length.
Used when there is at least the door height plus 12 of headroom clearance.
304 mm available it is best to use a dual track system designed for low headroom.
2 track headroom door height 12 required sideroom 4 5 required backroom 23 required.
Garage doors installed with double track low headroom hardware with liftmaster 8500 garage door openers.
When equipping a garage door with an electric door opener add 2 in.
On the other hand if there is only 4 in.
51 mm to standard lift movements.
Actual opening vehicle clearance is open ing height minus 6 e g.
Whether yours is a one piece up and over style or a swing style there is a means of replacing it with a sectional door.
Low headroom garage doors and openers your garage door is as old as the hills and really needs to be replaced with a new one.
3 track headroom door height 12 required sideroom 5 5 required backroom 23 required.
How to install a low headroom garage door by yourself.