Make an image (ran through a transform and merge node) appear and dissapear at certain frames

I am currently running an image (Read node) through a transform node, and then through a merge node. I would like to know how i could make that image appear and disappear at certain frames (e.g. Appears at frame 50, disappears at frame 150) any help?

Note: I am a beginner in Natron.

I think what you are looking for is the FrameRange node.

Thanks, i will try to use it.

Perfect! Thanks for the help.