[john_bry]

can I use 4" PVC for a dryer vent?
Will that fit up with the plastic dryer outlet baffles they sell that mount to the outdoor surface?

I bought steel ducting and the any angle 90's. Should I stick with steel?
I can wrap it in reflective bubble wrap.

4" PVC O.D. is not the same as 4" duct in terms of diameters? SO im not sure it will work plus fitting it up to the short flex portion from the dryer may not work.

I am hooking this up in my crawlspace (not that it matters)

 

[COLDIRON]

Most people use 4" round galvanized with segmented ells. Make sure the crimped ends are installed in the right direction of flow and only use tape on the joints no screws. Stay away from PVC, Plastic and metal flex duct. Flex catches lint and dirt.