The installation guide from Fabral is the best I've seen www.fabral.com go to tech. Most of it can be PDF filed on to your PC. A flashing kit should come with a quality vent, but if not use the info there to pattern your own cricket from sheet stock. We have an arrangement with the local A/C guy to brake me up whatever we need.
Contractor Talk - Professional Construction and Remodeling Forum
A forum community dedicated to professional construction and remodeling contractors. Come join the discussion about the industry, trades, safety, projects, finishing, tools, machinery, styles, scales, reviews, accessories, classifieds, and more!