Its a Battery Door, Hatch Frame, clip, and Latch for RC Cessna 747-I-TW
Made by Thingiverse user eae01751 for his Gamma 370. Thats Awesome!
select your input units to download- inches or millimeters,
Just print the parts, You will need to print two latches,
Get two screws that fit the latch loosely,
Install the latch,
Glue the frame into your RC plane (or whatever).