The PBB BB81 4-1/2" x 4" RC 1/4" US26D is a 5-Knuckle Full Mortise Standard Weight Ball Bearing Hinge, with 1/4" Radius Corners, and comes in Satin Chome Finish.
Features
Full Mortise
1/4" Radius Corners
Wrought Steel
Standard weight
All hinges are ANSI template
Specifications
General Product Information:
PBB, Inc. template hinges are manufactured to close tolerances and meet all specifications and requirements set by the American National Standards Institute (ANSI)
Material:
Steel-Polished and Plated or Bonderized and Prime Coated for Painting