of section a it is seen that the sliding vent 2 includes an interlock 10 and pile weather stripping 6 which passes over the low profile finger slide 8 of the latch and notched closing panel 9 it is to be appreciated that the outside profile of the latch is defined by slide 8 and that this profile is small enough so as not to interfere with interlock 10 or any other portion of sliding vent 2 as it moves along its track it being understood that contact with weather stripping 6 is acceptable and often desirable referring to fig3 it is seen that the upper illustration shows an interior view of a typical pet door with closing panel 9 and frame 7 to which an embodiment of the unique latch of the present invention has been attached the detailed view in the lower illustration shows parts of a latch of the present invention including a slide 8 which is capable of sliding into or out of a specially positioned notch 5 on panel 9 slide 8 is positioned on a mount 12 using at least one but preferably two attachments 11 which are machine screws in the illustrated embodiments slide 8 includes an interior opening or pocket 19 having a shelf 15 which receives the mount 12 and screws 11 the heads of screws 11 should be wide enough to rest on shelf 15 and the shafts of screws 11.