Features: Achieve optimal energy efficiency with 3 insulation foam panels designed to seal portable air conditioning window kits, blocking heat/cold transfer while reducing external noise for year round comfort. Crafted from heat resistant foam materials offer properties and easy customization (up to 50inch coverage) for most portable air conditioning window seal kits. Ideal for renters, apartment dwellers, and homeowners seeking temporary yet robust insulation solution without permanent window modifications. Perfect for sealing drafty window vents during months or creating noise barriers in apartments with frequent temperature fluctuations. Includes 3 pre cut 16.5inch foam panels and adhesive strips for quick installation, enabling users to reinforce existing window seal kits within minutes. Specifications: Component: Felt+Foam Size: As Picture Shows Package Includes: 3x Foam Board 1x Fixing Glues note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.