Adjustable Window Screen, 15' H x 21' - 40' W, 2 Packs Expandable Windows Screens with Aluminum Frame and Durable Mesh, Horizontal or Convert to...

Adjustable & Versatile: The adjustable window screen size is 21 x 15 x 0.7 inches when closed, and expands to 40 x 15 x 0.7 inches to fit different window sizes. It can be flipped 90° for vertical window use, ensuring flexibility for your entire home Easy Installation: Install in just 3 simple steps with no professional tools required. One person can quickly install or detach the expandable window screen, making cleaning and moving easier while saving on repurchasing costs High Transparency Mesh Screen: Made of flame-retardant fiberglass mesh, this durable expandable screen for windows effectively blocks critters while remaining nearly invisible. It allows natural light to enter, combining functionality and appeal Rust-Proof Tracks: The heavy-duty metal tracks are not easy to rust even in humid environments