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Horton Stack Doors by Duro Steel Doors

Duro Doors is a preferred distributor of Horton Stack Doors. All the weight of the Stack Door is on the bottom track, unlike the bi-fold door, which carries the weight of their door overhead. That means a savings to you because of the extra expense required for the building manufacture for the end wall loading needed to accept the weight of the bi-fold door.

Horton Doors are for large commercial openings - up to 70'

We also offer Commercial Overhead Doors, Insulated Doors & Electric Operators

Stack Door is manually operated door system, that glides on patented truck assemblies located on every other panel. Each truck assembly has 6 heavy duty sealed bearing, two riding on the top of the track and two riding one each side of the track. This design eliminates friction on all three sides of the bottom track, for a smooth operation. Due to the fact that power operators are not required, you eliminate the problems associated with power failures.


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Horton Stack Door

Door Details

Popular Sizes (In Feet)*

Horton Stack Door Details

The Horton Stack Door opens to the left and right of the framed opening for maximum versatility. When in the stacked position, door panels extend 90 degrees from the face of the building, requiring only 5" for every 2 panels. All doors Horton Stack Doors purchased through Duro Doors include a one year warranty on parts and workmanship. The manufacturer's warranty on the fiberglass skin is a ten year limited warranty.

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Widths from 40' - 70'
Heights from 12'-20'



The Stack Door installs on virtually any type of building, saving money and space. From Alaska to Florida, Stack Doors have been specified for aircraft hangars, tee hangers, industrial and agricultural buildings...even floating barges.


The Stack Door is NOT installed within the framed opening. It mounts on the outside of the building. The Upper Guide Channel and Mounting Brackets attach to the flat header, as do the end hinges on the flat side jams. Unlike vertical lift doors that store overhead, the framed opening height for the Stack Door is also the clear opening height. This unique feature can save 2' or more in overall building height. Most installations are completed in one day.


No motors are required; anyone can open this door with ease. Simply turn the handles located on every other panel, pull gently, and the Stack Door glides on it bottom track to stack neatly out of the way. The stacking design allows for a complete or partial opening, eliminating the need for side entrance doors.


Designed and tested for a twenty-five pound wind load, in actual use the Stack Door has withstood:

Hurricane Alicia; Texas, 1982

110 MPH winds; Russell, KS, 1983

Tornado; Wellington, KS, 1980

The Stack Door must be closed during high wind conditions. We have never had a door blow in while closed.

Weather Resistance

The Stack Door is not affected by adverse winter weather conditions. Our patented design puts the working mechanism inside, away form ice and snow. The bottom track sits 1/4" inside the framed opening. Neoprene Seals also protect the truck assembly from snow and ice.

*Additional sizes may be available.


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