91310 - Stainless Steel Supply and Return Security Grille

The Krueger 91310 series offers a robust solution for HVAC applications requiring enhanced security. This stainless steel supply and return grille features a perforated faceplate with 5/16" diameter holes on 7/16" staggered centers, effectively deterring finger penetration. Constructed entirely of 304 stainless steel (with an optional upgrade to 316 stainless steel), the 91310 ensures lasting durability in demanding environments. Its 46% free area perforation minimizes pressure loss, allowing for efficient airflow in areas requiring high volumes of supply or return air. This makes it an ideal choice for correctional facilities, hospitals, and other secure environments.

The 91310 security grille comes equipped with a range of features for easy installation and customization. Choose from sleeve lengths of 6", 8", 10", or 12" to best suit your project needs. A rear or front-operated damper option is also available, providing flexibility in airflow control. For added security, consider the optional angled frame, anchor bars, and round security bars. The standard finish for the 91310 is a #3 satin polish, offering a clean and professional appearance.

This product is categorized under Masterformat Division 23 37 13 for Diffusers, Registers, and Grilles, making it easy to specify for your construction project. Trust Krueger, a leading manufacturer in the HVAC industry, to provide reliable and high-quality solutions for your security grille needs.