How to make a 8 inch hole through a brick wall for venting
1 Roto hammer (rent from local tool rental company)


1+ Chisel bit(s)


1 8" circle drawn on the surface you wish to cut through

1+ hour of tedious, annoying, possibly painful labor

After you get your hole and ensure the vent fits, be prepared to seal any gaps with concrete caulk, or exterior vinyl caulk, or whatever suits your fancy.