Ives 3CB1-HW 4.5" x 4.5" Heavy Weight NRP Ball Bearing Hinges
Concealed Door Hinge Fire Hydrant Fire Door Heavy Duty Concealed Load- bearing Stone Door Concealed Concealed Door Hinge (Color : 200kg) - - Amazon.com
R801/R802 - ROCKWELL M3 DUAL ADJUSTABLE LIFT OFF CONCEALED BALL BEARIN – R&R Windows & Doors
Grade 14 Radius Concealed Bearing Hinge - Eclipse
4.5 x 4.5 Commercial Butt Hinge Oil Rubbed Bronze - Lawrence