How to beat the heat in a greenhouse?

[fivethirty]

i have a little black fan that rotates, works great for circulation i guess but not really the heat. its gonna be 93 degrees and they are already showing signs of heat stress in 87 degrees

 

[SlantEye]

we have had to run intake and exhaust fans in the past to keep temps more reasonable.. Just put a furnace filter or something to keep the bugs out

 

[fivethirty]

i think i realized what is causing it. the metal cage that is the greenhouse, heats up super bad. its literally like a big oven in there cooking the plants alive when its 93 out and the sun is blasting it all day. i touched the cage at the top and it was definitely brutal. hmmm