re: OT plumbers, contractors, and men who use tool belts. Water heater vent question

This is an easy DIY project. All u need to do is get the flue piping from Lowes/Homedepot, or hit one of the local plumbing supply houses (coburns/LCR, ect). Some self tapping sheetmetal screws, and duct sealeat for the seams and screw taps

Or if you really dont want to DIY, call a local sheetmetal shop. Cheaper then a plumber, and their craft anyways