In most cases, the type of hardware required on any door is a function of its overall weight and the frequency of its operation. In fact, the hardware is the weight bearing element of the door and thus, must be chosen with strict capacity limitations.
Acceptable safety factors must be kept in mind. Thermostop Inc. has provided you with a chart to simplify this selection task.
It must be noted that the following chart corresponds to door weights equivalent to the ThermostopTM doors using standard 26 gauge steel sheeting or the ThermostopTM AL-2000 aluminum doors using standard single glazing, standard double acrylic or polycarbonate.
| Characteristics | Model 50-T | Model 80-T | Model 80-THD | Model 80-W |
| 2″ (50mm) Torsion spring counterbalancing system | 3″ (75mm) Torsion spring counterbalancing system | 3″ (75mm) Heavy duty torsion spring counterbalancing system | 3″ (75mm) Weight counterbalancing system | |
| Track gauge | 14ga. (1.80mm) | 12ga. (2.50mm) | 12ga. (2.50mm) | 12ga. (2.50mm) |
| Bearing plates | 12ga. (2.50mm) | 12ga. (2.50mm) | 10ga. (3.40mm) | 10ga. (3.40mm) |
| Top roller carriers | 13ga. (2.10mm) | 13ga. (2.10mm) | 13ga. (2.10mm) | 13ga. (2.10mm) |
| Rollers | 2″ (50mm) | 3″ (75mm) | 3″ (75mm) | 3″ (75mm) |
| End-hinges | 13ga. (2.10mm) | 13ga. (2.10mm) | 11ga. (2.90mm) | 13ga. (2.10mm) |
| Double end-hinges (on door width of) | 14’ 0″ (4267mm) and greater | 14’ 0″ (4267mm) and greater | always | 14’ 0″(4267mm) and greater |
| Corner brackets | 12ga. (2.10mm) | 12ga. (2.50mm) | cast iron | 12ga. (2.50mm) |
| Counterbalancing | torsion springs | torsion springs | torsion springs | weights |
| Shaft | tubing or solid | solid | solid | solid |
| Precision pollar bearings | no | no | yes | yes |
Fail safety spring device
Allows to brake and
stop the fall of the door
in case the springs fails.
Fail safety corner bracket
Allows to brake and
stop the fall of the door
in case the cable fails.
Solid steel roller
Sealed precision bearing
Solid steel tire
Entirely zinc plated
Nylon roller
Nylon tire
Stainless steel stem
U.H.M.W. roller
Sealed precision bearing
U.H.M.W. covered with rubber
Precision pollard bearing
(Hardware model 80-THD, 80-W)
Recommended for doors
weighing more than 1210lbs (550kg).
Required for all
counterweight balancing system
Cast iron corner bracket
(Hardware model 80-THD, 80-W)
Extra heavy duty cast iron
corner bracket for doors weighing
more than 1210lbs (550kg).
Since 1984, Thermostop has been a reputable manufacturer of Industrial Sectional Doors, Cold Storage Doors and Specialty Doors such as Impactable Breakaway doors, Acoustic Doors and Ballistic Doors.
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