10 Best Window Locks & Latches 2026

Looking for the best window locks and latches to increase your home security? Look no further than our top 10 product reviews for window hardware. We reviewed and scored many products in the Locks & Latches category, and we found products ranging from a 7.4 score up to a 9.9 score. Our top pick, with a score of 9.9, is the Defender Security U 9847 Patio Sliding Door Loop Lock by PRIME-LINE. Made with a 2-1/8 In. hardened steel bar and diecast base, this chrome plated lock provides additional child-safe security and is perfect for patio sliding doors. But don't just take our word for it, keep reading to see which other window locks and latches made the cut and find the perfect one for your home security needs.