Quote from KennKong on January 28, 2012, 8:02 pm

I usually have a soft spot in my heart for Cave Johnson era maps, but this one left me a little disappointed. In it's favor, it had quite a bit of re-use of elements, so it was not just a straight run through. Even so, it had a lot of very simple steps, very few of which were strung together to make a better puzzle. 3/5 from me.

Sorry I can't remember the part name, but there is a collar for the end of the vent tubes that make them look more venty.