roof hatch
https://super-wiki.win/index.php?title=5_Tools_Everyone_in_the_roof_hatch_24_x_36_Industry_Should_Be_Using
Have a look at FAKRO's roof covering hatches that control the market. What exactly is a roofing system hatch and how do FAKRO roofing system hatches differ than the others? Most industrial as well as multi-room