Any good wall vents for Range Hoods Available?

Can anybody recommend a non-leaky outside-wall penetrating vent for a range hood? I've found lots of flimsy ones at the usual stores, but since I live in a cold climate I'd like to find one that seals better in the closed position. The duct from the range hood is 3"x10", but I can adapt to anything..
Thanks.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.