This adjustable soft-down lid stay is for upward opening flap doors used with piano, butt, or concealed hinges. It has opening angles of 80°, 90°, or 100°, and is designed to hold door in fully opened position. A speed adjustment screw located on front for easy adjustment.
Product Specifications:
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)