Don-Jo DSP-135 Deadlock Scar Plate | 1-1/2" Bore Backset Conversion

The Don-Jo DSP-135 Deadlock Scar Plate is a specialized hardware adapter designed for both aesthetic restoration and functional backset modification. This 3-1/2" deadlock scar plate is specifically engineered for use with deadbolts that utilize a 1-1/2" bore hole. Its primary function is to assist in converting a 2-3/8" backset to a 2-3/4" backset by seamlessly concealing the exposed portion of the original hole when the hardware is relocated further from the door edge.

Beyond its role in backset adjustment, the DSP-135 is a premier solution for door surface repair. It effectively hides "ghosting," finish wear, or unsightly mounting marks left behind by previous lock roses, ensuring a professional, factory-clean look for your entryway.

Key Features & Performance

• 1-1/2" Bore Optimization: Specifically sized with a 1-1/2" inside diameter to fit perfectly around the cylinder of smaller-diameter deadbolts.
• Backset Conversion Solution: The definitive solution for 2-3/8" to 2-3/4" backset transitions, allowing you to modernize your door hardware without the need for a costly door replacement.
  
• Oversized Surface Coverage: The 3-1/2" overall diameter provides a massive footprint that covers standard bore holes and surrounding surface damage, acting as a high-quality remodeling scar plate.
  
• Premium Stainless Steel Construction: Manufactured from US32D / 630 Satin Stainless Steel, offering industrial-grade durability and corrosion resistance that matches standard commercial trim.
  
• Aesthetic Restoration: Provides a clean, architectural finish that hides "scarring" on both wood and hollow metal doors during commercial door retrofitting.

Technical Details & Specifications

• Brand: Don-Jo
• Model Number: DSP-135
• Overall Diameter: 3-1/2"
• Inside Diameter: 1-1/2"
• Material: High-Quality Stainless Steel
• Finish: US32D (Satin Stainless Steel)
• Application: Deadbolt Backset Conversion & Hole Repair
• Installation: Sandwiches between the door face and the deadlock trim. For high-security or high-vibration applications, the hardware is secured using the deadbolt’s own thru bolts to ensure a permanent, shift-resistant hold.

Why Choose the Don-Jo DSP-135?

The Don-Jo DSP-135 is a critical "problem solver" for locksmiths and facility managers. Correcting a backset error or transitioning to a new hardware standard often leaves a door looking "Swiss cheese" with exposed holes; this stainless steel deadlock scar plate provides an immediate, professional-grade fix. It is an essential commercial hardware restoration tool that ensures your new deadbolt is mounted on a secure, visually polished surface.