Product review (5 stars): Very Happy Installer
I had to remove builder grade metal vent that critters had jammed and no longer provided shut off. Had to chip away stucco, and use several different 4" vent pieces to get proper depth of venbting from exterior wall (with adequate lip to seal into Heartland Closure lower housing, and also have sufficient extemnded vent tube inside interior wall, to permit easy flex hose attachment. What a diference a good product makes. I painted with Cryon spray, to match exterior wall, and I was appluaded by a plumber and electrician who saw this as very professional looking install.  I needed a hammer, a small box of 2-1/2 to 3 inch screws, cordless drill with screwdriver bits, can of injection insu;lation, so I could fill all voids between the wall and vent pipes, a cold chisel, some wood scraps for filling sides of penetration to form a solid anchor to drill into for mounting the vent. I also used a bayonet style interior attachment to simpliyf any future clean out needs. So far, all is working effortlessly, and my wife is happy. Should have done this 3 years ago!