WORLD'S FIRST 2x2 Stargate Trapdoor

RedstonerBuilding → WORLD'S FIRST 2x2 Stargate Trapdoor

I am sure that somebody in the world has already made this, but I couldn’t find it on YouTube, so I assumed it was the world’s first. This trapdoor is button activated and uses a strange layout so that I could fit the line for the closing. Its volume is 816 blocks which is bigger than my 3x3 one in door form, so I would appreciate it if someone could compact it. If you want to see it, it is at my plot (/p h bentheperson1).
I’m working on a smaller one. but it might take a little while
innosteve and (kinda) me made an 800 block one, but were making an even smaller one :-P
I finished mine, with a final size of 468 blocks, but it does seem to be coordinate dependent

I am so confused right now. Is it actually a trapdoor or is it a skydoor (One you can fly out of?)

Because a flush and seamless with the floor one doesn’t sound too too bad