Uploaded November 2020 | Updated September 2026, 1 day ago

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ProVia Signet, Legacy and Embarq exterior doors offer unparalleled energy efficiency, in part because of the innovative composite Z-AC threshold that acts as a sealing system when the doors are closed. The Z-AC threshold also is available as an option on ProVia Heritage entry doors.

The Z-AC threshold features a moving seal that engages as the door is opened and closed, providing maximum protection from drafts and water leaks.

The Z-AC threshold is just another example of the ProVia team fulfilling its mission by "caring for details in ways other won't."

Learn more about ProVia's energy-efficient exterior doors:
-- Embarq fiberglass - provia.com/doors/entry-doors/embarq
-- Signet fiberglass - provia.com/doors/entry-doors/signet
-- Heritage fiberglass - provia.com/doors/entry-doors/heritage
-- Legacy Steel - provia.com/doors/entry-doors/legacy

For assistance buying a ProVia entry door, contact a ProVia dealer: provia.com/where-to-buy

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