The 20F and 20 OF Series are a flush mount design that enable the installer to combine the security of a screw mount flanged switch with the concealment of a press fit switch.
They have been used in hollow aluminum frames where inadequate material depth will not reliably retain a press fit switch and in holes that have been drilled or have somehow become slightly oversized. They are available in 1/2" to 1 1/2" gap. Mounting hardware is provided.
20/20OF Series Features