sql insert into table from select without duplicates (need more then a DISTINCT)

I am selecting multiple rows and inserting them into another table. I want to make sure that it doesn't already exists in the table I am inserting multiple rows into. DISTINCT works when there are duplicate rows in the select, but not when comparing it to the data already in the table your inserting into.

If I Selected one row at a time I could do a IF EXIST but since its multiple rows (sometimes 10+) it doesn't seem like I can do that.