Corbin Russwin CR910BKM Grade 1 - Key Removable Steel Mullion, 1.5 Hour Fire Rated up to 8' Size, 10' Length

Corbin Russwin CR910BKM Key Removable Steel Mullion, 1.5 Hour Fire Rated, 10' Length

Commercial-Grade Key Removable Steel Mullion for Exit Device Applications

The Corbin Russwin CR910BKM is a professional-grade Key Removable Steel Mullion engineered for commercial and institutional door hardware applications. Designed to accommodate openings up to 8' in size, this mullion ships in a 10' length to allow field cutting for precise fit. It carries a 1.5 Hour Fire Rating, making it suitable for fire-rated door assemblies where code compliance is essential. As part of Corbin Russwin's comprehensive exit device accessories line, this steel mullion delivers the durability and reliability expected in high-traffic commercial environments.

Professional Features & Benefits

• Key Removable Design: Allows authorized personnel to remove the mullion with a key, enabling full-width opening when required for large access needs or emergency egress configurations.
• 1.5 Hour Fire Rating: Rated for fire-rated door assemblies up to 1.5 hours, supporting code-compliant installations in commercial and institutional facilities.
• Generous Size Coverage: Accommodates door openings up to 8' in size, providing versatile fit for a wide range of commercial door frame configurations.
• 10' Length for Field Cutting: Supplied at 10' length to allow on-site trimming to the exact required dimension, reducing waste and ensuring a precise, professional installation.
• Heavy-Duty Steel Construction: Fabricated from steel for long-term durability and structural integrity in demanding commercial and institutional environments.
• Commercial-Grade Quality: Designed as part of Corbin Russwin's exit device parts and accessories portfolio, built to the same high standards as their ANSI/BHMA Grade 1 hardware line.
• Freight-Shipped Item: Due to its 10' length, this mullion is an oversized item requiring freight truck delivery; additional freight charges apply and free shipping does not apply to this product.

Technical Specifications

• Product Group: Exit Device Parts and Accessories
• Product Subgroup: Parts and Accessories
• Product Type: Key Removable Mullion
• Commercial/Residential: Commercial
• Subcategory: Parts and Accessories
• Product Function: Key Removable Mullion
• Department: Door Hardware

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Retail Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• Government and Municipal Buildings

Why Choose Corbin Russwin Quality?

Corbin Russwin door hardware products are engineered to meet the rigorous demands of commercial and institutional facilities, with this steel mullion carrying a 1.5 Hour Fire Rating for code-compliant installations. Corbin Russwin is recognized for offering ANSI/BHMA Grade 1 mortise locks, exit devices, and door control hardware built to the highest commercial standards. When dependable performance and fire-rated compliance are essential, Corbin Russwin delivers the professional-grade reliability that commercial projects require.