Installation & Measurement
Reverse Angle Mounting
Reverse angle mounting is a track installation method where the vertical track is flipped so its mounting flange faces away from the door opening. This keeps the track body close to the jamb and recovers 1 to 2 inches of sideroom on each side, allowing installation where an obstruction sits close to the jamb.
Reverse angle mounting is a track orientation where the vertical track is installed with its flange pointing away from the door opening rather than toward it. In a standard mount, the track body sticks out toward the center of the garage and the flange fastens to the wall on the inside edge. In reverse angle mounting, the track body sits against the jamb and the flange fastens to the wall on the outside edge.
Why it saves space:
The track body is the thicker part. In standard orientation it projects into the garage by 1 to 2 inches. Reverse orientation moves that bulk back toward the wall. The result is 1 to 2 inches of recovered clearance between the track and whatever sits beside it.
When it is needed:
A concrete block wall leaves no space for a standard flange to sit flush. A steel column placed right next to the jamb blocks the standard track path. A water heater or electrical panel installed close to the door side requires more clearance than the standard track allows. In each of these cases, flipping the track to reverse angle mounting can resolve the conflict without moving the obstruction.
Architects sometimes specify reverse angle mounting on commercial projects as a clean surface-mounted solution on steel or concrete walls.
What changes in the installation:
Door operation is identical. The roller still rides the same track channel. The spring and cable sizing stays the same. The differences are:
- Anchor bolt or lag-screw locations shift to the outer edge of the jamb
- The flag bracket at the top of the vertical track may need a different version to connect to the horizontal track at the new angle
- Masonry anchors are typically used instead of wood lags on concrete or block walls
Reverse angle mounting is a well-established method. Clopay and other major manufacturers include it in their track hardware options.
Related terms
Lift Clearance
Lift clearance is the vertical gap between the top of a garage door opening and the horizontal track centerline, setting the baseline for standard or high-lift.
View termLow Headroom
How much clearance a standard track needs, how little you can get away with on a low-headroom kit, and the opener that fits when the ceiling is too tight.
View termStandard Lift
Standard lift is the most common garage door track configuration: the door rises vertically then curves into horizontal overhead tracks parallel to the ceiling.
View termFollow-the-Roof Track
Cape Cod and vaulted garages cannot take level horizontal track. How the pitch is measured and ordered, and why a standard trolley opener often won't fit.
View termPeople also ask
Common questions related to reverse angle mounting.
How do you test a garage door opener auto-reverse force setting?
Place a 2x4 flat on the floor in the door's path and press close.
Read full answerHow does garage door auto-reverse safety work?
How garage door auto-reverse safety works: two federally required systems, the photo-eye beam and the force sensor, that stop and reverse a closing door.
Read full answerWhy does my garage door reverse before closing?
Why your garage door reverses before closing: misaligned sensors, a dirty lens, a touchy close-force setting, or a blocked track, and how to fix it.
Read full answerWhy does my garage door reverse before reaching the floor?
The door reverses because the opener senses resistance before the door reaches the floor.
Read full answerCurrent offers
Save on your garage door
Browse our current specials and claim the one that fits your door.
$500 Off a New Garage Door
Save $500 on a complete new garage door installation. Free in-home estimate, top brands, and professional haul-away of your old door.
Claim this offer10 Free Rollers with Garage Door Replacement
Get 10 new garage door rollers included at no additional charge with a qualifying garage door replacement. Not valid with spring replacement.
Claim this offerHave a garage door problem now?
Tell us what your door is doing and we will tell you what is likely wrong and what it costs. Same-day service across the Denver metro.