Don-Jo AST-2138M Security Strike – 1-3/8" x 18", 13 Gauge Steel, Silver Lacquer / Bright Brass / White

The Don-Jo AST-2138M is a heavy-duty security strike manufactured by Don-Jo Manufacturing and designed to reinforce the door frame at the latch bolt point on commercial and residential doors. Measuring 1-3/8" wide by 18" tall and formed from 13-gauge (.095) ferrous steel, this security strike delivers substantial frame coverage that a standard-depth box strike simply cannot match — making it the right choice wherever latch-bolt protection and frame integrity are priorities. The extended 18" plate length distributes load across a broad section of the door jamb, and the single mortise latch hole with universal center accommodates common latch-bolt preps without modification. Three finish options are available on this listing: silver lacquer (SL), bright brass (BP), and white (WH), so the plate can coordinate with the surrounding door hardware and frame finish.

Security Strike Features

• Proven Security Strike Design: Engineered specifically as a security strike to reinforce the door frame at the latch point, providing greater protection than a standard strike plate.
• Heavy 13-Gauge Steel Construction: Formed from 13 ga. (.095) ferrous steel for a rigid, durable plate that resists deformation under load.
• Generous 18" Plate Height: The tall 1-3/8" × 18" footprint spreads force across a wide area of the door jamb, reinforcing the frame along its full strike zone.
• Single Mortise Latch Hole, Universal Center: One precisely located mortise hole with a universal center accommodates standard latch-bolt preps without cutting or field modification.
• Three Finish Options: Available in silver lacquer (SL), bright brass (BP), and white (WH) to match existing door hardware and frame finishes.
• Not Handed: A single non-handed SKU works on either hand of door, simplifying ordering for mixed-hand openings.
• Commercial Shelf Pack: Packaged 10 units per shelf pack, supporting contractor and distributor stocking needs.

Technical Details

How to Specify / Order

Select the finish at the time of order: AST-2138M SL (silver lacquer), AST-2138M BP (bright brass), or AST-2138M WH (white). This item is non-stock and ships direct from Don-Jo; please allow 3–10 business days lead time. Orders in multiples of the 10-unit shelf pack are standard.