this panel (think of it as a sheet that is spread on the roof) is so placed to allow air to get into the roof, from where it enters the house. look for a menu on the table. the hardboiled eggs were a surprise to me, i had not thought to include them but they add such great color. balance is the key word he used. yarn holds up extremely well, even after having been ripped out multiple times. may 11 to may 15, 17 -- new! 