Window Air Conditioner Cover - Window/thru Wall - 2PC SET - Outdoor/Indoor - 27W, 18H, 22D and 27W, 18H, 4D - GRAY All our Covers are made in America using American Materials and Labor. Customer feedbacks agree .. this is the answer for Winter protection For more sizes and styles type PremierAcCovers in search bar. Full 2 year manufacturer's warranty