Best Dryer Vent Wall Cap

20191122i am currently researching into dryer vent caps that provide an airtight seal am aware of the ecovent, the seiho rccs with backdraft damper, and the heartland products came across another product manufactured by a canadian company, dundasjafine cotheir proshieldtm telescopic dryer vent hood like this idea of having the air flow push out the vent and at the end.