The 2315 Series "Snap-n-Go" magnetic contacts are designed specifically for panel or sectional style overhead doors. The unique design allows the contact to be mounted directly to the door channel, with the magnet mounted vertically on the door - off the floor and out of harm's way. The Panel Door contacts are constructed with a rugged extruded aluminum housing potted with Sentrol's exclusive polyurethane potting compound which makes the unit corrosion resistant.