Roto North America has introduced the "ELA" special opening restrictors as a safety feature installed on large turn-only aluminum windows.
The “ELA” opening restrictor locks in the end position and is controlled by the handle. By using the “RotoTiltFirst” technology, a user is only able to open the sash as far as the defined end stop position. The opening restrictor will limit the opening angle at 3 1/2 inches (89mm).
The “ELA” opening restrictorcan be installed on windows that weigh up to 400 pounds (200kg), and is available in screw-in and clampable versions.
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