Best Double Cylinder Deadbolts for Home Security and Compliance
Double cylinder deadbolts offer locking on both sides of a door, increasing security for homes with glass panels or prone to forced entry. This guide reviews top-rated options available on Amazon, highlighting installation considerations, security features, and compatibility. Below is a quick summary table of the five products featured to help you compare at a glance.
| Product | Brand | Backset / Style | Keying | |
|---|---|---|---|---|
| Kwikset 665-S Double Cylinder Deadbolt with SmartKey | Kwikset | 3-3/4″ backset standard | Keyed on both sides | Satin Nickel / Venetian Bronze variations |
| Prime-Line U 9972 Jimmy-Resistant | PRIME-LINE | Door hinge compatibility; standard backset | Keyed, double cylinder | Diecast and steel construction |
| Gobrico Keyed Alike Double Cylinder | Gobrico | Standard backset | Keyed on both sides | Sat in Nickel finish; 2-pack available |
| Rulart Double Keyed Deadbolt | Rulart | Adjustable backset | Keyed on both sides | Solid copper cylinder; anti-pry features |
| SCHLAGE Double Cylinder Deadbolt | SCHLAGE | Standard backset | Keyed on both sides | Snap & Stay design |
Choosing a double cylinder deadbolt involves assessing security level, door type, and local building codes. The products below are evaluated for durability, ease of installation, and compatibility with typical US doors. Each entry includes a brief overview of key features to help you decide which model best fits your home.
Kwikset 665-S Double Cylinder Deadbolt
Kwikset’s 665-S Double Cylinder Deadbolt is part of the 660 series and provides key access from both sides, a common choice for doors with glass panels or high-traffic entryways. The satin nickel finish blends with modern hardware, while the SmartKey option (where applicable) offers quick rekeying without removing the lock. Installation requires standard door prep and attention to local code compliance, particularly where egress or exit door requirements apply.
Prime-Line U 9972 Jimmy-Resistant Deadlock
The Prime-Line U 9972 is a diecast-and-steel double cylinder deadbolt designed for hinged entry doors where security and durability are priorities. It features a corrosion-resistant brass-plated finish and is suitable for exterior use. The construction supports reliable key control on both sides, though installation should confirm compatibility with your door thickness and backset. This model emphasizes protection against pick attempts and is appropriate for standard residential doors needing enhanced privacy.
Gobrico Keyed Alike Double Cylinder
Gobrico’s keyed-alike double cylinder deadbolts offer a satin nickel finish and a 2-pack with matching keys. The design emphasizes straightforward installation on standard pre-drilled doors and is suitable for exterior security. It is compatible with left- or right-handed doors, and the included keys enable convenient access for multiple users. Consider kit options if you want to upgrade an entire entry system with uniform keying.
Rulart Double Keyed Deadbolt
Rulart presents a versatile double-keyed deadbolt with an adjustable backset to fit a range of door thicknesses. The lock features a solid copper cylinder and steel latch for enhanced security and anti-pry/anti-collision functionality. It is designed for doors that require reliable two-sided access and can be adjusted for either 60mm or 70mm backsets depending on plate compatibility. This model is suitable for exterior doors needing additional privacy controls.
SCHLAGE Double Cylinder Deadbolt
Schlage’s double cylinder deadbolt combines long-standing durability with a trusted design. The Deadbolt’s Snap & Stay feature helps keep the bolt aligned during installation, and the dual-key access provides security from both sides. Schlage has maintained a reputation for robust hardware across varied architectural styles, making this option a dependable choice for exterior doors where higher security is needed.
Note: Always verify local building codes regarding double-cylinder deadbolts. Some jurisdictions restrict or prohibit double-cylinder locks on exterior doors due to egress requirements. Consider the door’s material, thickness, and backset to ensure a proper fit and reliable operation.
Buying Guide: Key Considerations for Double Cylinder Deadbolts
- Security level: Look for solid construction (copper cylinders, steel latches) and anti-pry features. ANSI/BHMA ratings provide a baseline for commercial-grade performance.
- Key management: Decide whether you want matching keys for multiple locks (keyed-alike) or individual keys. Some models offer easy rekeying options; verify compatibility with existing hardware.
- Backset and door thickness: Measure backset (commonly 2-3/8″ or 2-3/4″) and door thickness to ensure proper fit. Adjustable backset options add versatility for older doors.
- Finish and aesthetics: Choose finishes that complement your door hardware and external styling. Satin nickel, polished brass, and Venetian bronze are common options.
- Installation considerations: Pre-drilled doors simplify mounting. Some models include installation guides; others may require drilling or modification.
- Code and safety: Check local codes regarding egress requirements for exterior doors. In some areas, single-cylinder deadbolts may be preferred for safety reasons.
- Maintenance: Periodically check screw tightness and alignment. If a key is hard to turn, a keyed-alike set may benefit from rekeying or lubrication with a graphite-based product.
- Warranty and support: Brand warranties vary. Consider customer support and replacement parts availability when choosing a model.
When selecting a double cylinder deadbolt, balance security needs with practical door use and local codes. The options highlighted here cover a range of forms, finishes, and installation scenarios to help American homeowners improve door security with confidence.