are designed to be fitted with an unsprung door knob
Not to be confused with butt hinges
They can be fitted at the top or bottom of the door and are recessed along the edge
From The Anvil window accessory
please see the PDF drawing in Dimensions
Adjustable Concealed Hinge Finish:Polished Nickel are designed to be fittedIntroducing our new Concealed Hinges, available in four finishes: Satin Nickel, Polished Nickel, Matt Black & Matt Antique Brass, they can seamlessly blend with your other home hardware. Each hinge comes with matching fixings, and once fitted, also have a degree of adjustment tolerance should your door be fitted slightly askew. Once fitted and adjusted correctly, the colour matched caps cover the fixings and other adjustment screws, leaving a sleek,