Norton Rixson 51 Series 3/4" Offset Shallow Depth Floor Closer with Automatic Hold Open and Backcheck - 250 lbs Door Weight

Norton Rixson 51 Series 3/4" Offset Shallow Depth Floor Closer with Automatic Hold Open and Backcheck - 250 lbs Door Weight

Professional Shallow Depth Floor Closer Solution

The Norton Rixson 51 Series delivers professional-grade floor closer performance with 3/4" offset shallow-depth design for interior doors weighing up to 250 lbs. This single acting, handed floor closer features automatic hold open with backcheck functionality and allows doors to swing 180°, trim permitting. Constructed with robust materials and internal components, the unit provides concealed in-floor installation for enhanced vandal resistance and aesthetic appeal.

Professional Features & Benefits

• Door Weight Capacity: Supports doors up to 250 lbs with reliable floor-mounted weight distribution for enhanced structural support.
• Shallow Depth Design: 3/4" offset configuration ideal for upper levels of multi-story buildings where space constraints require compact installation.
• Automatic Hold Open Options: Available with automatic hold open (ABC) at 90°, 105°, or 180° positions, with doors swinging 5° beyond hold open point for secure positioning.
• Enhanced Speed Control: Separate independent valves for closing speed, latch speed, and backcheck provide precise operational adjustment for optimal door performance.
• Flexible Door Swing: Single acting, handed operation allows doors to swing 180°, trim permitting, with vertical door adjustment capability for proper alignment.
• Vandal-Resistant Installation: Concealed in-floor mounting provides protection from tampering while maintaining clean aesthetic appearance.
• Professional Construction: Cycolac rust-proof cement case with robust internal components engineered for moderate traffic commercial applications.
• Fire Rating Compliance: Certain models UL Listed (F prefix) with fire rating for 20 minute labeled doors (suffix -20) for code compliance applications.
• Manufacturer Warranty: 2 Year Limited warranty for added confidence and protection in commercial installations.

Technical Specifications

• Commercial/Residential: Commercial
• Cover Type: Cycolac, rust-proof cement case
• Delay Function: Yes
• Department: Door Hardware
• Door Swing: Single Acting
• Door Weight: 250 lbs.
• Duty Level: Standard Duty
• Fire Rating: Yes
• Hang Type: Offset Hung
• Hold Open Feature: Yes
• Mounting Method: Offset
• Product Category: Door Controls
• Product Group: Door Controls
• Product Model: 5103ABC
• Product Subgroup: Door Closers - Floor
• Product Type: Floor Door Closers - Shallow Depth
• Series: 51 Series
• Spring Type: Fixed Size
• Subcategory: Floor Closers
• Traffic Rating: Moderate Traffic
• UL Listing Type: Certain models UL Listed (F prefix)
• Warranty: 2 Year Limited

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and floor surfaces for proper 3/4" offset positioning.
3. Prepare floor recess and door by drilling required holes and routing as specified in manufacturer instructions for shallow depth installation.
4. Install M19 intermediate pivots (ordered separately) and secure the floor closer unit to floor recess per manufacturer torque specifications.
5. Adjust operational components including separate independent valves for closing speed, latch speed, and backcheck for proper door control throughout 180° swing range.
6. Configure hold open settings at specified angle (90°, 105°, or 180°) and verify doors swing 5° beyond hold open point for secure positioning. Test device operation and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Multi-Story Building Upper Levels
• Retail Establishments
• Government and Municipal Buildings
• Fire-Rated Door Applications

Why Choose Norton Rixson Quality?

Norton Rixson 51 Series floor closers deliver professional-grade reliability with robust materials and internal components engineered for moderate traffic commercial applications. The shallow depth design with Cycolac rust-proof cement case construction provides long-term durability in demanding environments. 2 Year Limited warranty coverage ensures dependable performance where concealed door control and vandal resistance are essential.