Steinwhale Door Reinforcement Lock 2-Pack – 800 lbs Security, Childproof Inside Night Defender

Upgrade your door with the Steinwhale Door Reinforcement Lock, a precision-built, CNC-machined solution in aviation-grade aluminum. The solid construction features a premium sandblasted anodized finish that resists rust, fading, and scratches, keeping its sleek look under daily use.

Designed for inward-swinging doors, this lock delivers real-world security benefits while remaining user-friendly for adults. It withstands up to 800 lbs of force, providing a substantial deterrent against attempted door kicks. In tests, it offers roughly 12 times the strength of a standard deadbolt, giving families an extra layer of defense in the home.

Childproof & toddler-safe by design: mounting higher on the frame reduces reachability, and the unique pinch-and-pull action makes it difficult for little hands to operate. At the same time, adults can quickly unlock from inside by pinching the top and bottom and pulling toward you, offering peace of mind during emergencies.

Note: this product is intended specifically for inward-swinging doors. A minimum 0.2" (5 mm) gap between door and frame is required for a smooth fit, and installation requires drilling into the door frame using the included extended screws for a permanent mount.

Key benefits

• CNC Machined Aviation Aluminum with a rust-resistant anodized finish.
• Up to 800 lbs of force resistance and 12x the strength of a typical deadbolt.
• Childproof pinch-and-pull mechanism designed to deter curious toddlers.
• Inside quick-access unlock from top and bottom for fast egress.
• Compatible with inward-swinging doors; ensures proper fit with a small frame gap.
• Durable, premium finish that stays looking new with daily use.
• 2-pack for multi-door homes or hallways.

Real-world uses

• Bedroom and nursery doors where nighttime safety matters without restricting adult access.
• Living areas or entryways where extra door security can offer peace of mind.
• Homes with toddlers, offering a high-mounted, hard-to-reach lock option that still allows quick adult escape.
• Renters or homeowners who want a robust, drill-in installation for lasting security (note: not a tool-free solution).

Carefully read the installation notes to ensure compatibility and optimal performance. The 2-pack provides coverage for two doors that share the same inward-swinging design, letting you upgrade multiple entry points in one purchase.