AmesburyTruth 4-Bar Hinges

4-Bar Hinges are specially designed for casement, awning and projected vents with a lip on the outside edge.
Standard Duty 4-Bar Hinges are most commonly used on lighter windows no heavier than 40 lbs.
Heavy Duty 4-Bar Hinges are most commonly used on commercial windows up to 200 lbs.

11/16 inch Track Width
7/8 inch Track Width