Wooden syncron slide also known as a "split frame" is designed for when both table leafs are required to open simultaneously.
How the opening is measured:
1: Close the slide completely
2: Measure the total length when closed
3: Divide the total length by 2 and make a pencil mark on the wings of the slide in closed position
4: Open the slide completely and measure the distance between the pencil marks made and you have the opening
Material : Durian Timber
Manufactured by Siso