The ME Series closer is a Multi-Point electrical hold open device and will hold the door open in any position. The 4310ME series is a pull side mount, while the 4410ME is a push side mount. Both the 4310ME and 4410ME are handed units.
The SE Series is a Single Point hold open device and will hold the door in one position. (determined during the arm installation). The SE product is Non-handed.
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