insulate

6 inch PVC pipe. Connect to end of ducting run. Quietens the vortex by a huge amount. Dummied up pics on the work bench.

Whats up guys I have a question about insulating an outdoor grow space. if i have an outdoor box that gets hit by the sun only on one wall and the roof, if i insulate the ceiling and that specific wall will it considerably lower temps? the other walls are shaded so when its cold i would like...