Stanley Security QRM313 Grade 1 Mullion, Fire Rated
The Stanley QRM313 is a Grade 1 commercial mullion designed for use with pairs of doors equipped with rim exit devices. It features a keyed removability (KR option), which allows the mullion to be removed when needed for passage or maintenance, while maintaining security functionality when installed.
This mullion is fire-rated, making it suitable for code-compliant entrances. It is pre-prepped to fit Stanley’s QED100 and QED300 exit device series. Multiple finishes are available—including Aluminum Painted (689/US28), Dark Bronze Painted (695), and Primer (600)—to match architectural aesthetics. Length options cover standard 8 ft height, with longer versions (9 ft, 10 ft, 11 ft, 12 ft) for taller openings; additionally, field-sizing is possible
Specifications
Specification | Detail |
---|---|
Model | QRM313 – Keyed Removable Mullion (KR option) |
Grade / Rating | ANSI/BHMA Grade 1; Fire-rated for standard heights (max 8 ft for fire rating, longer available) |
Device Type | Mullion for double door with rim exit devices |
Finish Options | Aluminum Painted (689/US28); Dark Bronze Painted (695); Primer (600) |
Standard Height | 8 ft (96 in) standard; variants up to 12 ft; field-sizable for non-standard openings |
Material / Construction | Steel mullion tube, typically 2″ × 3″ with ~1/8″ wall thickness; finishes applied to protect and match visual design |
Keyed Removable | Yes – allows removal of the mullion when needed for large clearance or maintenance |
Compatible Exit Devices | Pre-prepped to accept Stanley’s QED100 and QED300 Series exit devices |
Finish Codes | 600 (Primer), 689 (Aluminum Painted), 695 (Dark Bronze Painted) |
Benefits
-
Fire-rated for safety compliance
-
Keyed removable design adds flexibility for access and maintenance
-
Multiple finishes allow matching architectural styles
-
Field-sizeable options support different door height requirements
Manufacturer Resources
Product Specs
- Category:
- Exit Devices and Trim
- Product Group:
- Exit Devices and Trim
- Series:
- QRM300 Series
- Product Subgroup:
- Exit Devices - Rim
- Product Type:
- Mullions
- Subcategory:
- Exit Devices
- Commercial/Residential:
- Commercial