Description

For UPWARD-OPENING FLAP DOOR used with piano, butt or concealed hinges Opening angle 80°, 90° or 100° NSDX-35 is designed to hold door in fully opened position Speed adjustment screw located on front for easy adjustment Two stop version (holds door at 65°and 90°) is also available Torque Calculation : Torque = Door Height × 1/2 × Door Weight Per Piece: 20~70 kg·cm (19~60 lbs·inch), Per Pair: 40~140 kg·cm (38~120 lbs·inch)