Wout12345 | Slime block trapdoor - Minecraft @Wout12345 | Uploaded 10 years ago | Updated 4 hours ago
After seeing Ground's "Slimefloordoor", I tried and went ahead to build a smaller and/or quicker design. This is the result of that.

Links:

SCHEMATIC (BOTH DESIGNS):
http://www.planetminecraft.com/project/slime-block-trapdoor

Ground15's video:
http://youtu.be/xbAME0FeKyM

Missed any links? Let me know in the comments below!