Adjustable Window Screen 21-40x15 Inch, Expandable with Rust-Proof Metal Tracks, Fiberglass Mesh, Felt Edges for Seal, No-Drill Installation for Home Windows

<p>🪟 <strong>Product Specifications</strong></p><ul><li>📐 Size: 21 x 15 x 0.7" (Closed) / Expands to 40 x 15 x 0.7"</li><li>🔄 Design: Expandable Horizontally or Vertically (90° Flip)</li><li>🪨 Material: Fiberglass Mesh + Heavy-Duty Rust-Proof Metal Tracks</li><li>🔧 Features: Felt Edges for Seal, No-Drill Installation</li><li>🏠 Application: Bedrooms, Living Rooms, Bathrooms</li></ul>

• Adjustable and Versatile: Size 21 x 15 x 0.7 inches when closed, expands to 40 x 15 x 0.7 inches for different window sizes, flips 90° for vertical use.
• Easy Installation: Install in just 3 simple steps with no professional tools required, one person can quickly install or detach for easy cleaning and moving.
• High Transparency Mesh Screen: Flame-retardant fiberglass mesh effectively blocks critters while remaining nearly invisible, allowing natural light to enter.
• Rust-Proof Tracks: Heavy-duty metal tracks not easy to rust even in humid environments, reinforced for added strength with smooth sliding and strong pressure durability.
• Felt Edges for Better Seal: Felt edges on top and bottom seal gaps around window frame, keeping out unwanted critters and water during heavy rain.