MURPHY DOOR Hidden Hinge Hardware - Easy DIY Hidden Door System, Heavy Duty Swinging Door Hinge for Secret Door or Hidden Door Bookcase, Up to 300 lbsBrand: MURPHY DOOR Color: Black Features: DIY The Murphy Door Hidden Door Hinges are for experienced carpenters who would like to DIY their door project! These pins allow a single door to hold up to 300 pounds and function with ease. Hidden Hinges The patented pin hinge system allows a door to sit flush in wall, open and close easily with in swing or out swing from a left or right design. For French Doors, buy two hinge kits! Murphy Door Hinge Kit The