Window Air Conditioner Cover Indoor with Velcro Sides - Inside AC Cover for Winter - 21" x 15" x 3.5" (Brown)

Indoor Window Air Conditioner Cover (21" x 15" x 3.5")

Key Features

• Designed to block cold winter drafts, dust, and debris from entering the interior living space through the inactive air conditioning unit.
• Constructed with a heavy-duty fabric exterior and high-density polyester fiber fill layers for optimal thermal insulation.
• Features integrated hook-and-loop side straps to allow for easy adjustment and secure routing of the appliance power cord.
• Finished in a neutral brown color to blend with standard interior room decor and trim.
• Measures exactly 21 inches wide, 15 inches high, and 3.5 inches deep to provide a snug, wrap-around fit.

Replaces / Cross-Reference Part Numbers

• Universal 21x15 Indoor AC Cover
• Standard Winterizing Draft Shield
• Polyester Fill AC Insulation Bonnet

Compatibility & Fitment

• Universally compatible with most standard window-mounted air conditioning units measuring up to 21" W x 15" H x 3.5" D.
• Fits major appliance brands including General Electric (GE), Frigidaire, LG, Haier, and Kenmore, provided the physical dimensions match.
• Designed strictly for indoor use; not intended to protect the exterior condenser unit from outdoor weather elements.

When to Replace

• Transitioning into the fall and winter seasons when the window air conditioner will remain installed but powered off.
• Noticeable cold air drafts or wind noise can be felt entering the room through the AC vents.
• The existing winter cover has torn seams, degraded elastic edging, or failing hook-and-loop fasteners.
• The internal polyester insulation has compacted or flattened, losing its thermal sealing properties.

Installation Tips

• Turn off and unplug the air conditioning unit from the wall outlet before installing the cover for the winter season.
• Wipe down the front plastic grill of the AC unit with a dry cloth to ensure no dust or moisture is trapped beneath the fabric.
• Slip the cover over the top corners of the unit first, then pull the elastic edges down evenly over the bottom corners.
• Secure the side hook-and-loop straps firmly against the unit casing, ensuring the power cord is safely routed through the side gap without being pinched.