1. Large Cat Window Perch This cat windowsill perch is spacious enough to accommodate large cats. The main frame is constructed from thickened wood and carbide, ensuring stability with a weight capacity of up to 40 pounds. 2. EASY ASSEMBLY ADJUSTMENT Assembling this cat window hammock is quick and straightforward, requiring only a few steps. Once assembled, simply tighten the thumbscrews to adjust the distance between the hooks and supports to fit your windowsill's thickness—no wrench needed to avoid frustrating screw twisting. 3. NO DRILLING SUCTION CUPS REQUIRED FOR INSTALLATION This cat bed attaches securely to the window using two metal hooks and is supported by two wooden stands, eliminating the need for wall damage or concerns about suction cups failing. The widened metal hooks increase with the windowsill, distributing pressure evenly to protect your window from damage. 4. Nonapplicable Window Types: This product is not suitable for windows or sills with the following conditions. Please verify your window before: 1. Windows without a slot. 2. Windowsill edges extending more than 2.3 inches from the wall. 3. Window trim deeper than 4.3 inches compared to the sill, or if the window regulator lip extends below the window slot.