【ONLY FITS SMALL WINDOWS (11"-18")】This short window security bar is specifically designed for SMALL sliding windows only. Adjustable from 11 to 18 inches, it is ideal for bathroom windows, basement windows,small horizontal sliding windows, and other compact window openings. NOT suitable for standard large household windows. Please measure your window size carefully before purchasing. 【Helps Prevent Children & Pets from Opening Windows】Designed to help improve window safety at home, this sliding window lock bar helps limit window opening distance to reduce the risk of children or pets accidentally pushing windows open. Also adds an extra layer of protection against forced window entry. 【Strong Metal Construction with Rubber Base】Made from durable metal with a rust-resistant coated finish, this small window security bar is built for long-term daily use. The anti-slip rubber base increases friction against the window frame while helping protect surfaces from scratches and damage. 【Adjustable Length for Compact Window Openings】The window safety bar adjusts freely from 11" to 18" to fit various small window sizes. The rotating rubber foot helps create a tighter and more stable fit against both vertical and horizontal sliding window frames. 【Portable Design for Travel & Temporary Use】Compact and lightweight for convenient storage and travel. Suitable for apartments, dorms, hotels, rental properties, RVs, and vacation homes where additional small window security is needed without permanent installation or tools. 4 Pack Small Window Security Bars Adjustable 11"-18", Short Sliding Window Lock Bar for Small Windows, Child Safety & Anti-Theft Window Bar with Rubber Base for Bathroom & Basement Windows - White