what does the shield on a central ac unit does
The AC-DraftShield helps winterize your home by blocking drafts from your open central air conditioner vents. AC-DraftShield works on vents of many sizes, and even on through structure wall air conditioner units.There are several variations of the AC-DraftShield :interize your Home. The AC-DraftShield helps winterize your home by blocking drafts from your open central air conditioner vents. AC-DraftShield works on vents of many sizes, and even on through structure wall air conditioner units. There are several variations of the AC-DraftShield :