This black plastic spring loaded screen door lever latch is used on many trailers.  Choose right hand or left hand.  Hand is determined by the hand you use to operate the latch by pushing down on the lever.

Comes with catches and screws.

Dimensions:

• Handle is 3 1/4" long
• Mounting box is 2 3/4" high
• Mounting holes are 2 1/4" center-to-center
• Protruding catch is 2 1/2" high
• Protruding catch mounting holes are 1 1/2 center-to-center
• Strike is 1 3/4 high
• Strike mounting holes are 1 1/4 center-to-center