ASSA ABLOY access controlled revolving doors are designed to handle the demands of restricted access in your facility. These doors are ideal for situations where the door needs to be secure and you get the added benefits of climate control and energy cost savings.The access control RD4A revolving door by ASSA ABLOY (previously Besam) creates an attractive yet highly secure entrance that controls access in one or two directions. An emergency break-away feature allows the door wings to swing open and create a clear evacuation path. By providing complete separation of the indoor and outdoor environments, this revolving door can help reduce noise as well heating and/or cooling costs.A revolving door is “always open, always closed” meaning air exchange is minimal. Not only will your indoor climate be safeguarded against unwanted air infiltration for the comfort of your visitors and staff, you will also spend less on heating and cooling of your building. These revolving doors can be ordered in several different configurations that can be combined to match virtually any building, and are designed to be placed directly on the finished floor surface with no special foundations required.