Thanks for sharing .... I just did the same exact thing but went a step further just to see the circulation of the shop .... the shop is 22 ft by 40ft so I did the same smoke bomb test you have shown in the video and then went to all 4 corners of the room and one at a time set them off ..... the reason was my store is about 2200 sq ft ... but the studio in the left hand corner of the store is around 22 x 40 ... I made it as air tight as I could so not to suck out all the cold A/C air out of the main store .... I busted 2 basement type vents in the block wall on the back of the store for the fresh air makeup .... from all 4 corners you could see the circulation from all corners ... was a great thing to see as you could really tell what the makeup air was doing .... from all corners it jetted straight to the intakes.
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