This sound is recorded with a h2 zoom and you could percieve the sound of openning and closing a wc door. You can perceive a closed space with resonances from some machine and where someone open a wc door and after a fews seconds door is closed.
My bedroom door being closed during a recording. Sony ecm-ds70p mic to a sony minidisc mz-n710 acting as a preamp into my edirol ua-25 audio interface.
I was searching for good door sounds, but i couldn't find any, so i recorded myself opening my door. Recorded with samsung galaxy s7 edge, and cleaned up in audacity. I think the result came out nicely :)i hope you can use it.