Compact release with strong holding force the Adams Rite strike offers a choice of two extension lips (25mm & 50mm sub cover).
The lock release (electric strike) is ANSI fitting. For single doors use 25mm extension lip.
Lip Extensions are for centre hung doors, thick doors or other conditions that may vary from the standard 1 3/4" thick door that closes flush (or near flush) with the jamb face. For existing 7100 Series strikes, a thin metal membrane in the standard lip can be drilled or punched out and the lip extension can be added in the field.