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Don-Jo AST-21341 Security Strike – 1-3/4" x 18", 13 Gauge Steel, Silver Lacquer / Bright Brass / White
The Don-Jo AST-21341 is a heavy-duty security strike manufactured by Don-Jo Manufacturing from 13-gauge (.095) ferrous steel — a thickness that places it firmly in the commercial-grade category for door reinforcement applications. Measuring 1-3/4" wide by 18" tall with a single latch hole, the AST-21341 is engineered to reinforce a single-bore prep sized for a key-in-knob or deadbolt, covering the door frame strike area with a full 18" of steel to resist forced-entry attempts at the latch or bolt point. This security strike is available in three finishes to coordinate with surrounding door hardware: silver lacquer (SL), bright brass (BP), and white (WH).
AST-21341 Security Strike – Key Features
- Heavy 13-Gauge Steel Construction: Fabricated from .095" ferrous steel for rigid, commercial-caliber frame reinforcement at the strike zone.
- Extended 18" Height: The tall plate spans well beyond the latch opening, distributing force across a greater length of door frame rather than concentrating stress at a single fastener point.
- Single Latch Hole: Cut for one latch or bolt opening, making it the right fit for key-in-knob sets, single-cylinder deadbolts, and similar single-bore applications.
- Three Finish Options: Silver lacquer, bright brass, and white finishes allow coordination with standard residential and light-commercial hardware trims without custom ordering a separate SKU.
- Not Handed: The AST-21341 installs on either hand of door without modification — no handing selection required at the time of order.
- Shelf Pack of 10: Packaged ten units per shelf pack, convenient for contractors, locksmiths, and property managers stocking multiple units for a project.
Technical Details
| Manufacturer | Don-Jo Manufacturing |
| Model Number | AST-21341 |
| Product Type | Security Strike |
| Material | Ferrous steel |
| Gauge | 13 ga. (.095") |
| Width | 1-3/4" |
| Height | 18" |
| Number of Latch Holes | 1 |
| Application | Single hole – key-in-knob or deadbolt |
| Handing | Not handed – universal fit |
| Available Finishes | Silver Lacquer (SL), Bright Brass (BP), White (WH) |
| Shelf Pack Quantity | 10 |
How to Order
Select the finish — SL (silver lacquer), BP (bright brass), or WH (white) — at the time of purchase. The AST-21341 is a non-stock item that ships directly from Don-Jo Manufacturing. Please allow 3–10 business days lead time after order placement.
| General - US Finishes | SL - Silver Lacquer or Bright Brass or WH - White |
| Brand | Don-Jo |
| Length | 18 Inch |
| Material | Steel |
| Part Type | Strike |
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