6. Entrapment Protection
The UL325 standard for gate operators requires a minimum of two independent entrapment protection
means for each entrapment zone. An entrapment zone is defi ned as follows:
For slide gates, any locations between a moving gate and a counter opposing edge or surface where
entrapment is possible up to a height of 6 ft. (1.83m) above grade. Such locations occur if at any point
in travel the gap between a moving gate and the fi xed counter opposing edges or surfaces is less than
16 in. (406mm).
Potential entrapment zones are shown below for slide gates, but keep in mind there may be other
entrapment zones presented by the actual installation and adjacent structures or landscape that must
be protected as well.
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