Flexible Flap Pivots On Steel Rod
Pivot Rod with Bushings Eliminates Most Flap Wear
 

Note: Since this graphic was designed, the Endura flap has run over 3 million trials! While there was significant evidence of wear, especially where the test machine was striking the flap, the flap continued to be serviceable.

Durability
The Endura Flap swings freely on a pivot rod supported by bushings. This approach virtually eliminates wear caused by flexing.  More space is available for use by the pet as well.