Gravity driven

-Low friction technology
-Inside door

The Dynaco D-311 LF is designed for inside applications. It requires little space and protects your environment against drafts, humidity, dust and dirt.
Operating speed and superior sealing properties improve your traffic flows and provide employee comfort, environmental control and savings on energy costs.
The patented «LF» (Low Friction) technology, combined with a frequency inverter driven motor, assures a smooth operation.

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