Description
Product Overview
The National Hardware N335984 Door Security Guard is engineered to deliver robust protection for commercial entryways while maintaining an elegant appearance. Finished in satin nickel, the guard offers a subtle sheen that complements a wide range of architectural styles, from modern office lobbies to traditional retail storefronts. Each package includes two identical guards, allowing you to secure multiple doors or provide a spare for future installations. Constructed from high‑grade steel, the guard is heat‑treated for enhanced strength and resistance to impact, ensuring it can withstand repeated use in high‑traffic environments. The design incorporates a low‑profile latch mechanism that integrates seamlessly with existing door hardware, eliminating the need for extensive modifications. Precise dimensions—5.4 inches wide, 1 inch thick, and 6.7 inches tall—provide a balanced fit that aligns with standard door frames, while the lightweight construction (6.9 ounces per unit) simplifies handling and installation. The product is backed by a reputable manufacturer, National MFG Sales Co, known for delivering reliable commercial door solutions for over three decades. With a customer rating of 4.3 stars from 96 reviews, the guard has proven its value to businesses seeking dependable security without compromising aesthetic appeal.
![[Product front view showing all components]](https://www.diginets.store/wp-content/uploads/2026/07/07665bae56cd4f678ea15851ececcea3.jpg)
Usage
Ideal for a variety of commercial settings, this door security guard excels in environments where both security and accessibility are paramount. Install the guard on office doors that require controlled entry, such as reception areas, conference rooms, and executive suites, to prevent unauthorized access while still allowing staff to open the door with ease. Retail establishments benefit from the guard’s ability to deter shoplifting attempts by adding a physical barrier that discourages forced entry, yet it does not impede the flow of customers during peak shopping periods. In educational facilities, the guard can be applied to classroom doors, faculty offices, and laboratory entrances, providing an extra layer of safety for valuable equipment and sensitive materials. Hospitality venues, including hotels and restaurants, can use the guard on back‑of‑house doors to secure storage rooms, kitchens, and staff-only areas, ensuring that only authorized personnel gain entry. The guard’s straightforward installation process—requiring only a screwdriver and standard mounting hardware—makes it suitable for DIY projects as well as professional contractors. Its compatibility with most door thicknesses and frame types means it can be retrofitted onto existing doors without the need for custom fabrication, reducing both time and cost for businesses looking to upgrade their security infrastructure.
Why Choose Us
Choosing the National Hardware Door Security Guard means partnering with a brand that prioritizes quality, durability, and customer satisfaction. Each guard undergoes rigorous testing to meet industry standards for impact resistance and corrosion protection, ensuring a long service life even in demanding environments. The satin nickel finish not only adds a refined visual element but also provides an additional protective layer against moisture and wear, reducing the need for frequent maintenance or replacement. Our commitment to excellence is reflected in the comprehensive support we offer: from detailed installation guides and video tutorials to responsive technical assistance that helps you resolve any questions quickly. We understand that security investments are critical for your business, which is why we stand behind our products with a clear warranty that covers manufacturing defects, giving you confidence in the reliability of your purchase. Moreover, the guard’s design emphasizes ease of use—its latch mechanism operates smoothly, allowing authorized users to open the door without excessive force while still presenting a formidable obstacle to intruders. By selecting this product, you benefit from a proven solution that balances robust protection with aesthetic versatility, making it a smart choice for any commercial property seeking to enhance its security posture.
Key Features
- High‑grade steel construction provides exceptional strength and impact resistance for lasting security.
- Satin nickel finish adds a sleek, corrosion‑resistant surface that blends with diverse décor styles.
- Low‑profile latch integrates easily with existing door hardware, simplifying installation.
- Compact dimensions fit standard door frames while delivering a robust barrier against forced entry.
- Dedicated customer support and clear warranty ensure peace of mind and reliable after‑sales service.
FAQ
Can the guard be installed on any door thickness?
Yes, the guard is designed to accommodate most standard door thicknesses ranging from 1½ to 2 inches. The mounting holes are positioned to align with typical door frame configurations, allowing a secure fit without the need for custom drilling.
What tools are required for installation?
Installation requires only basic hand tools such as a screwdriver or drill, along with the mounting hardware included in the package. No specialized equipment or professional services are necessary, making it a straightforward DIY project.
Is the satin nickel finish prone to scratching?
The satin nickel coating is engineered to resist minor scratches and wear. While it maintains its appearance under normal use, excessive abrasive cleaning should be avoided to preserve the finish.
How does the guard improve security compared to a standard latch?
Unlike a simple latch, the security guard adds a reinforced steel barrier that resists forced entry attempts. Its robust construction and secure latch mechanism make it significantly harder for intruders to bypass, providing an added layer of protection for high‑traffic or sensitive areas.
What warranty does National Hardware offer for this product?
National Hardware provides a limited one‑year warranty covering manufacturing defects. This warranty ensures that any issues arising from material or workmanship will be addressed promptly, reinforcing the product’s reliability.




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