i have a $12 exaust fan thats blowing out that cord slot up top you can buy them at home debot or lowes my main exaust is squerl cage. no it doesnt have glass. i never had heat problesm until this heatwave where having in southern california if anything it will get to cold but again i think this is due to that fact that my house has little to no insalation and is basically wahtever the outside temp is i just took a couple pictures so you can get a feel for the hight and plants i have let me think 12 master kush 1 cherry ak47 1 superkush and i think i have to somehow fit a blueberry in there obviously i have a few to many plants