You have a minor grammatical mistake in the following sentence:
Today's vents are advanced and better then ever before, make sure you got the right roof vent.It should be better than instead of better then.
Copper Roof Vent
You have a minor grammatical mistake in the following sentence:
Today's vents are advanced and better then ever before, make sure you got the right roof vent.It should be better than instead of better then.