Double-Layer Insulated Foam Panels, 3-Pack Insulation Seal Panels for Portable AC Window Vent Seal Kit, Thick Adjustable Insulation Board, Air Conditioner Window Gap Filler

Dual-Layer Insulation Design: Double-layer foam panels help reduce gaps around window vent openings and support airflow through the vent kit. | Helps Limit Heat, Light and Noise: The 2-layer foam can help reduce heat transfer, reduce light entry, and lower outside noise. | Adjustable Length up to 50 in: Includes 3 foam panels that can be combined up to 50 in, suitable for many sliding window vent panels | Easy to Cut and Install: Trim the foam panels to match your window sealing plates; install using the included double-sided tape. | Wide Compatibility: Works with many portable AC window vent kits, dryer vent kits, and other window ventilation systems for sealing around vent openings.