roger61611 wrote
Hi, in my new house, where the dryer goes is against a concrete block
wall between the main house and the garage. There's a hole broken thru
the block wall for the dryer vent to run and I have it temporarily
hooked up this way - the dryer just blows out into the garage.

The hole is quite a distance from an exterior wall so I can't figure a
way to redirect the hot air outside. It's be a 20 foot run to get to
an exterior wall.

I heard there's some kind of box you can use in such situations (blast
box ?) that I could put in the garage over the hole i the wall, to
catch lint and diffuse the hot air.

If this is a new home, as you said, I'm wondering how the home was issued a
certificate of occupancy if the dryer was not vented in accordance to code?
An improperly vented dryer is a potential fire issue.