GEM's 180-degree hinges are a flush mounted hinge. They use double knuckles to allow full opening of a hatch to 180 degrees.
- Flush mounting eliminated snagged fishing lines or stubbed toes while still allowing 180 degrees of hatch motion
- Require a recess for installation due to the double knuckles
- Eliminates the need for restraining cables
- Available in many sizes and hole patterns