Best Window Locks & Latches (2026 Guide)

Selections were based on high star ratings and review volume across sliding-window locks, adjustable security bars, and window guards, emphasizing features, construction, and customer feedback

This roundup covers top-rated window locks and latches for sliding and fixed windows, focusing on security, child safety, and installation style. Picks were chosen by star rating and review volume, and represent common hardware types like adjustable bars, keyed locks, and guard panels

Top Picks

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    ZRFCXE Window Locks, 12 Pack for Sliding Windows & Doors

    ZRFCXE Window Locks, 12 Pack for Sliding Windows & Doors

    ZRFCXE • ★ 4.1/5 • Mid-Range

    Sliding window locks with vertical key for mid-track visibility and added stability. Easy installation with two fixing holes and protection pads to minimize scratches. Customers note effective security, sturdy build, and easy fitting

    • dual fixing holes for extra holding power
    • security with vertical key
    • protective padding to avoid scratches
    Buy at Amazon →
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    Sliding door security bar, adjustable 16–51 in

    Sliding door security bar, adjustable 16–51 in

    DEROFIT • ★ 3.9/5 • Mid-Range

    adjustable security bar for sliding doors and windows with telescoping design for versatile fit. provides an extra layer of protection and easy removal of the bottom lock bar for multi-use functionality. customers highlight ease of installation and sturdy build

    • adjustable fit for most openings
    • dual-function security bar
    • easy installation
    Check current price on Amazon →
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    Sliding Window Locks (10 Sets) with Keys

    Sliding Window Locks (10 Sets) with Keys

    STERGDE • ★ 3.9/5 • Budget

    Adjustable aluminum sliding window locks with key separation for vertical and horizontal tracks. Easy installation without drilling and designed for a wide range of tracks. Customers praise easy setup and durable security, though some note fit variations

    • track-compatible sliding locks
    • no-drill installation
    • key-based security
    Check current price on Amazon →
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    Segal S 4752 Fixed Window Guard

    Segal S 4752 Fixed Window Guard

    Defender Security • ★ 3.9/5 • Budget

    Fixed window guard to prevent child falls; non-egress design with adjustable width. Customers note easy installation, sturdy build, and good value, though screws are disliked

    • adjustable width 23-1/2 to 38 inches
    • 0.048 inch thick white carbon steel
    • 3-7/8 inch bar spacing on center
    Check current price on Amazon →
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    Double Bolt Lock for Sliding Glass Doors

    Double Bolt Lock for Sliding Glass Doors

    CAL DOUBLE-BOLT LOCK • ★ 3.8/5 • Budget

    A high-security lock for double sliding doors that helps prevent forced entry and keeps children safe. Customers report easy installation and improved security, though some note fit and instruction issues

    • forces entry resistance
    • discreet, low-profile design
    • versatile for middle junction of doors
    Check current price on Amazon →
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Buying Guide

Match lock type to window

Choose a product designed for your window: sliding-window locks and adjustable security bars suit horizontal sliders and patio doors, while window guards fit non-egress casement or sash openings

Prioritize rated security features

Look for keyed locks or solid metal construction in listings that note vertical keys or aluminum components to resist forced entry attempts

Consider child-safety requirements

If preventing child access is key, select adjustable guards or hardware described for child-safety and non-egress to meet safety goals without compromising emergency egress rules

Choose installation style

Decide between no-drill or drilled installations: no-drill aluminum sets minimize tools and surface changes, while mounted locks and bars typically require screws for higher strength

Check adjustability and fit range

Measure opening widths and pick adjustable options (for example bars spanning ranges like 16–51 in or guards adjustable across 23.5–38 in) to ensure proper fit and secure installation