51310 - Aluminum Supply and Return Security Grille

The Krueger 51310 Aluminum Supply and Return Security Grille offers superior protection for HVAC applications in security-sensitive environments. This heavy-duty grille features a perforated face plate with 5/16" diameter holes on 7/16" staggered centers, making finger penetration extremely difficult while maintaining a 46% free area for optimal airflow. Constructed from durable aluminum with a stich welded sleeve, the 51310 is designed for long-lasting performance in demanding conditions.

Ideal for both supply and return air applications, the 51310 Security Grille is available in a range of sizes to suit your project needs. Choose from sleeve lengths of 6", 8", 10", 12", or 18" to accommodate varying ductwork depths. Customize your installation further with optional features including rear or front-operated dampers, angled frames, anchor bars, round security bars, or two loose angles. The standard finish is British White, providing a clean and professional appearance.

Meeting the requirements of Masterformat Division 23 37 13 for Diffusers, Registers, and Grilles, the Krueger 51310 Security Grille delivers the perfect balance of security and performance. Ensure the safety and integrity of your HVAC system in high-security areas with this robust and reliable solution.