QUALITY MADE: Made of polyester, the ac cover's elastic edges and pvc-lined stitching allow the edges to stay securely gripped preventing it from slipping. DRAFT PROTECTION: Using the quality polyester material allows for your heat to stay inside and the drafts and winds to stay outside of the window. SECURELY FITS STANDARD AC UNITS: ALPINE HARDWARE'S indoor extra large ac cover is 28" x 20" x 3.5". Fits most 12,000 - 15,000 BTU window air conditioner units. GET AN OUTDOOR AC COVER: For the best protection against drafts and to keep the heat in, Alpine Hardware recommends an outdoor window ac cover, too. Alpine Hardware offers an indoor window air conditioner cover.

Construction:
Alpine Hardware's indoor window ac cover is made of a white polyester with elastic edges that are pvc-lined to make sure the fit is tight and snug.

Features:
-Reduces heating costs in the winter significantly.
-Protects the inside of the air conditioner from debris.
-Protects from winds and drafts outside, so they don't come inside.
-Works with any name brand window air conditioning unit.

Available Sizes
-16"long x 13"high x 3.5"deep.
-21"long x 13"high x 3.5"deep.
-25"long x 16"high x 3.5"deep.
-28"long x 20"high x 3.5"deep.