To determine the radius of the track measure from the center point of the radius to the bottom of the track as shown by dimension r.
Minimum clearance for garage door track.
Used when there is at least the door height plus 12 of headroom clearance.
However this requires mounting the torsion spring on the rear of the horizontal tracks.
This option helps provide more vertical space in the garage.
12 3 track 15 radius thru 32 0 o h.
It is possible to mount torsion springs in a garage with only 5 inches of headroom.
Headroom clearance dimensions door height centerline of shaft minimum headroom 2 track 15 radius thru 16 0 o h.
When equipping a garage door with an electric door opener add 2 in.
A nominal four inch thick concrete slab is another 3 1 2 thick.
51 mm to standard lift movements.
The most popular standard radius track is a 15 radius which requires 15 of headroom to accommodate the curve of the track and all other track components equipment.
Chances are you are in trouble and will have to reduce the height of your overhead door opening unless.
Horizontal track curve available in 12 305 mm or normally provided 16 406mm radius.
In order to install torsion spring hardware we recommend a clearance of 12 in.
Other standard radius options include 20 and 32 radii but the larger the radius the larger the headroom required to accommodate the curve.
Lift clearance track follow the roof headroom clearance dimensions.
Garage doors operating with torsion springs require a minimum of 9 1 2 inches of headroom while doors using extension springs require a minimum of 4 1 2 inches of headroom.
See chart below this kit works with both 12 and 15 radius horizontal track.
For a standard garage door with an electric opener you ll want a minimum of 15 inches of overhead clearance.
304 mm available it is best to use a dual track system designed for low headroom.
Lift clearance for applications where additional headroom clearance is required.
5 5 8 l c.
2 track headroom door height 12 required sideroom 4 5 required backroom 23 required.
After these two deductions your 18 inches of distance from top of door opening to eave ends up being all of 2 5 8 clear.
Roll formed from 0 078 2mm thick commercial galvanized steel 2 1 8 54mm overall outside dimension.
6 5 8 l c.
Step 1 the double track low headroom lhr conver sion kit is designed to modify the minimum head room clearance required.
3 track headroom door height 12 required sideroom 5 5 required backroom 23 required.
On the other hand if there is only 4 in.
12 inches for the door and torsion spring system and three inches for the garage door opener equipment.
Standard extension springs require between 9 and 12 inches of headroom but you can find double track low headroom systems that only need 5 to 9 inches.
121 mm to 12 in.