Yes. It was sealed. It still is, sort of. I'm going to build a cap that will seal the intake when it's not in use. This intake feeds through 8" flex duct directly from a roof vent that's about 4' above the ceiling of the flower room. This brings in cooler air which is great for keeping the flower room cool on those nights when it's still too cool out to run the AC, but warm enough that the flower room gets warm with no AC (50-60* nights). It also brings in a river of co2 which is a luxury I didn't have before. Remember, it'll be sealed when not in use.
I don't have neighbors so I don't have to be as careful as the Urban grower (smell).
I see. Thank you. I did not realize your room was sealed. You don't use CO2 either? I can see how this intake will be a huge benefit for you! It's too bad you will lose it when it warms up. Do you intend to add CO2 enrichment later on?