Quote Originally Posted by Adam_Wysocki
There's really no need. Ball python eggs are very hardy and can withstand slight changes in temps due to door opening and closing.
If you really wanted to do it "right", you'd construct some type of air lock ... but again, it's really not necessary.
-adam
oooo airlock now thats getting fancy! but i get ya. i only said pocket door because depending on the size of the closet/snake room, he may not be able to swing a door and some type of a sliding door may make things easier. But then again will there be a need for a door? i mean if it opens up to the herp room the abient air will be about 80 maybe a bit warmer, you could use a sheet or something over the door to keep the heat up a little in the closet/incubator, without the space problem possibly caused by a swinging door.

~mike