KIDDE 400n electromagnetic door holder for floor/wall mounting with release button, adjustable and foldable bracket to 475mm at 180º and 450mm at 90º. holding force: 400n. power supply: 24vcc / 67ma. magnet ip54, holder ip42. retaining plate with ball joint included. reverse polarity protection. dimensions: 90x80x475mm at 90º or 90x80x450 at 180º.