Restricted opening friction hinges for upvc double glazing windows, and are for use on Top hung windows

Although these are classed as a 20" window hinges the metric length is 508mm

Stack height is 13mm - if you require 17mm stack height then we have easy-fit hinge packers available.

Width is 18mm

Supplied as a handed pair where both hinges contain the restrictor catch.

Also available in  12", 16" and 24"

Information from the manufacturer

• The child resistant catch limits the opening to 100mm maximum when restricted.
• Tested to BS6375 Part 2 1987 to withstand a force of 600N when opened to it's restricted position.
• Built in quick release levers allow windows to be fully opened for easy cleaning conforming to BS8213 Part 1 1991.
• The restrictor catch automatically resets when the window is closed.
• Cost effective alternative to additional restrictor stays and simple to fit.
• Widely used by many social housing specifiers and fabricators.
• Suitable for BS7415 kite marked windows and all local authority.
• Manufactured in the United Kingdom using high-grade Austenitic and Ferretic stainless steel
• Made by Cotswold Architectural Products