Don-Jo BF-135 Cylindrical Lock Face Hole Filler | 3-3/4" Oversized Diameter

The Don-Jo BF-135 Cylindrical Lock Face Hole Filler is an oversized architectural solution designed to permanently "blank out" abandoned hardware preps on commercial and residential doors. With a massive 3-3/4" diameter, this plate is specifically engineered to cover not only the standard 2-1/8" bore hole but also the additional thru bolt holes and mounting post scars left behind by heavy-duty commercial lever locks. It is the premier solution for door surface repair, providing a clean, professional finish that hides unsightly damage and hardware "ghosting."

Constructed from high-strength steel with a thru-bolted design, the BF-135 creates a tamper-resistant, structural seal. This makes it a critical commercial door security component for schools, healthcare facilities, and office buildings where locks are being removed or relocated during a facility-wide retrofit.

Key Features & Performance

• Maximum Coverage Area: The 3-3/4" diameter is significantly larger than standard fillers, ensuring total concealment of the "scarring" often found around Grade 1 commercial lever-handled cylindrical locks.
• Lever Lock Optimized: Specifically designed to bridge the larger footprint of lever-set trim, effectively "blanking out" the main bore and the thru bolt mounting points.
• Thru-Bolt Security: Features a robust thru-bolted design that clamps two steel plates together through the door. This ensures the filler cannot be pried or removed from the exterior, providing a permanent security barrier.
• Paint-Ready Grey Primer: Supplied in a professional grey primer finish, allowing for immediate on-site painting to match your existing door color perfectly.
• Industrial Steel Build: Manufactured from heavy-gauge steel to maintain the structural integrity and fire-rating requirements of commercial hollow metal and wood doors.

Technical Details & Specifications

• Brand: Don-Jo
• Model Number: BF-135
• Diameter: 3-3/4"
• Compatibility: Covers 2-1/8" bores and surrounding thru bolt holes.
• Mounting Type: Thru-bolted for industrial-strength stability.
• Material: Heavy-Duty Steel
• Finish: Grey Primer (PC)
• Application: Commercial Door Face Restoration & Security

Why Choose the Don-Jo BF-135?

The Don-Jo BF-135 is the "problem-solver" for facility managers who need to abandon a commercial lever lock opening without replacing the door. Standard small-diameter fillers often leave mounting holes exposed; this oversized face hole filler provides a 100% clean aesthetic. It is a cost-effective and reliable solution for abandoned door holes, ensuring your entryways remain secure, code-compliant, and visually polished.

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