UL (Underwriters Laboratory) write standards to ensure products are safe. The standards must be met by manufacturers to gain UL certification. The sticker on the product verifies the product meets the standard.

UL325 is a standard unique to automated doors and vehicle gates which spells out requirements which ensure the equipment is safely designed and its installation in the field is safe for pedestrians. THe standards have been in effect since 2000.

UL325 compliant equipment and installations are required in the US National Building Code. Most jurisdictions require compliance.

The manual for each operator spells states UL325 compliance and specific details on how to make the installation of the equipment compliant.

For detailed information on UL325 please visit the DASMA (Door and Access Systems Manufacturers Association) website dasma.com. In particular, these two documents are helpful and comprehensive.

Model 3 QuickFold:
        • Accommodates pedestrian gate installation.
        • ½ of intrusion into property as swing gate.
        • No attachment to ceiling.
        • Durable.
        • Flexible design, weight, material of gate.
        • Gate "folds" out of the drive aisle.
        • Higher initial cost than roll-up door.

Slide Gate:
        • Does not intrude into garage/property.
        • Durable
        • Hardest to meet UL325 safety standards
        • Constraint on pedestrian gate location
        • Slow (1 ft/second) open/close time

Swing Gate (ground mounted operator):
        • Durable
        • Flexible gate materials/ designs.
        • Opens far into garage/property
        • Constraint on pedestrian gate location
        • Slow (1 ft/second) open/close time

Roll-Up Door:
        • Low initial cost
        • Does not intrude into garage/ property
        • Noisy
        • Attached to ceiling (noise and vibration transferred into living areas)
        • Frequent replacement over life of gate system (cost and inconvenience) of operator AND grill/ door.
        • Slow (1 ft/second) open/close time.
        • Very limited grill/ door designs.

Tilt-Up / Vertical Lift Gate:
        • Does not intrude into garage/property vehicle movement.
        • Operator attached to ceiling (noise and vibration transferred into living areas)
        • Frequent replacement of springs over life of gate system (cost and inconvenience).
        • Install on ceiling sometimes interference with pipes.
        • Weight sensitive - limited gate designs.

UL325 requires a separate pedestrian access be near (within sight of) an automated vehicle gate. The Model 3 makes this easy because the gate movement and operator do not interfere with a pedestrian gate being mounted directly next to the Model 3 tower.

A. Estimate the gate open-close cycles per year. (number of cars x 2 is a good, conservative estimate for an two-way gate system. For a separate entrance system and exit system it would be one cycle per operator.). Multiply this by 365 (days in a year). Some cars will not leave the garage. Others will exit more than once. Each exit and each entrance represents one open-close cycle.
B. Useful life of operator. Ask the manufacturer. The Model 3 is OVER 1,000,000 open-close cycles.
C. Useful life of gate. Ask the manufacturer. Gates provided with the Model 3 are OVER 20 years.
D. Cost of replacement operator. Ask the installer.
E. Cost of replacement gate. Ask the installer.
F. Cost of service and maintenance. This is optional as it will likely be similar among systems. But the installer or servicing company can estimate. Assume four maintenance visits per year. One vehicle damage repair every two years is typical.

>>Assume the accessories (looks, keypads, photo eyes, etc.) will have the same life regardless of the operator and gate.

>>Assume the gate is not damaged by a vehicle. While this may happen it is out of control of the operator/gate. Consider, however, that the Model 3 gate and operator can often withstand a "bump" without any impact to their long term performance. This is not the case for roll-up grills and doors.

1. Create a spreadsheet with 21 columns (20 years) and four rows

2. Load the initial cost of the installed operator and gate system.
3. Calculate the year that the operator and gate will need to be replaced (B) divided by (A) and (C) divided (A). Place the cost of replacement (E) and (F) in "Equipment cost" in each of these years.
4. Add service and maintenance costs (optional)
5. Compare the cumulative 20 year cost for each alternative gate system.