Low Clearance Garage Door Track

I wan to raise my garage door by 4 so i am looking the 4 or 5 track to add to the bottom and move the existing track on top of this new track.
Low clearance garage door track. Sectional garage door with low head room torsion springs in front low clearance garage door. Springs are mounted at the front of the horizontal track. Low headroom track springs to front headroom clearance dimensions door height centerline of shaft minimum headroom 2 track 15 radius thru 12 0 d h. 121 mm to 12 in.
For low headroom system you do not need the additional 2 in. 4 step 6 temporarily support the rear end of the track with a rope from the trusses overhead in the garage or on a tall ladder. The top section makes the turn quicker while opening. We have an older home 45 years plus and we replaced the one piece garage door with a garage door that breaks down in to 4 sections we used this with our low ceiling due to not have enough clearance.
Requires a minimum of 4 5 of headroom. 51 mm to standard lift movements. Low headroom rear mount spring. 2 track headroom door height 12 required sideroom 4 5 required backroom 23 required.
3 track headroom door height 12 required. 9 13 thru 18 0 d h. It allows the doors to run on a high and a lower track at the same time taking care of the low clearance problem. Door height low headroom track springs to rear headroom clearance.
9 13 3 4 d h. This option helps provide more vertical space in the garage. Ideal door overhead garage door double track low headroom kit. 304 mm available it is best to use a dual track system designed for low headroom.
8 11 3 4 thru 16 0 d h. The top roller runs down the upper horizontal track while the remaining rollers go down the lower horizontal track. Track is applicable for building applications where headroom is limited and standard track will not work. On the other hand if there is only 4 in.
When equipping a garage door with an electric door opener add 2 in. Does your old garage door need to be replaced by a new door but you aren t sure if you have enough space. Some garages do not have the minimum headroom requirements for a standard garage door. This situation requires double low headroom tracks.
8 12 1 2 3 track 15 radius thru 12 0 d h. 9 step 7 attach the curved end of the lower horizontal track. The top section of the door follows the upper track while the three other sections use the lower track. Low headroom garage doors and openers.