question on air movement in pc oven. iam building a 4x4x6 oven ,3 x 3000 elements, i purchased a blower from granger a (4mh 324),ceiling mount in corner, my question, would another fan in the opposite corner be overkill, can you have to much air movement ,even after the curing process has started.
also i have notice some oven builds lately aren't adding windows. i had planned on putting in a window with a hinge to check flow out and pc temps., needed or not needed

.what type of glass is best ( pyro ceram) or tempered glass, best place to buy, man a lot of questions for a new guy. thanks jack