Foam insulation boards support free customization via cutting, allowing easy adaptation to different exhaust hole and AC duct sizes for flexible installation. Thick, robust insulation board material boasts long-lasting durability and helps reduce external noise, enhancing your daily comfort when using portable air conditioners. This window ac insulation kit includes 3 foam boards and 1 adhesive strip, providing all essential components for quick setup on single or double-hung. Gray ac foam insulation seamlessly matches most window frame styles, keeping your space looking tidy while delivering reliable thermal sealing performance. Double-layer window ac insulation construction effectively blocks heat transfer, improving airtightness to minimize cool air loss from your portable AC., Weight: 0.440924524 Pounds, Manufacturer: Ameble_E77_8115995