When it comes to sliding security doors, there’s one component intruders target more than any other: the lock strike. This is the metal plate fixed to the door frame where the lock bolts engage. On a standard door, it’s a weak point. Prowler Proof’s exclusive Performance Plus (P+) extended strikers were designed specifically to close that gap, and they come standard on every sliding security door with Lockwood triple point locking.
What Is a Lock Strike, and Why Do Intruders Target It?
The lock strike is where the bolts of your sliding door’s locking system connect to the frame. It’s a small piece of hardware, but it does a lot of the structural work of keeping a door locked under force.
A standard strike can be vulnerable to a jimmy attack. An intruder uses a tool such as a screwdriver or crowbar to pry between the lock and the frame, levering the strike away and forcing the door open. Because this is such a well-known attack method, the Australian Standard for security doors (AS5039) specifically includes a jemmy test as part of its testing procedure for all compliant security screens and doors.
Introducing Performance Plus (P+) Extended Strikers
Performance Plus (P+) is Prowler Proof’s own design methodology: taking industry-standard hardware and components and re-engineering them to perform beyond the standard — whether that means more tamper resistance, more strength, or more durability.
To push sliding door security beyond what AS5039 requires, Prowler Proof partnered with leading hardware manufacturer ASSA Abloy (parent company of Lockwood) to develop its own strengthened sliding door strikes. These P+ strikers are included as standard — not an optional upgrade — on every Prowler Proof sliding security door fitted with a Lockwood triple point locking system.
How Performance Plus Strikers Improve Security
Anti-Jimmy Design
Performance Plus extended strikers are twice as long as the industry standard. That extra coverage makes it much harder for a tool to find leverage between the lock and the frame. This directly reduces the risk of forced entry through a jimmy attack.
Extra Secure Fixing
The extended size also means the strikers are installed with up to twice as many screws as a standard strike. That spreads the load across more fixing points, strengthening the hold under pressure.
Marine Grade Durability
P+ strikers are made from 316 marine grade stainless steel. This is the same grade used in Prowler Proof’s ForceField mesh, so they’re built to handle years of daily use. Coastal locations which are corrosion-prone are also safe, without weakening.
Works with H.I.T. Receivers Performance Plus strikers are also designed to complement Prowler Proof’s H.I.T. (Hidden Installation Technology) receivers, adding a further layer of protection at the same locking points.
Paired with Lockwood Triple Point Locking
Performance Plus strikers work alongside a Lockwood 8653 triple point locking system. This secures the sliding door at three separate points along the frame rather than just one. Combining a hardware-grade lock with an extended, heavily-fixed strike means the weakest link in a standard sliding door setup becomes one of its strongest.
Why This Matters When Choosing a Sliding Security Door
Not all sliding security doors are built the same, even when they look similar. Many manufacturers rely on industry-standard strikes that meet the minimum requirements of AS5039’s jemmy test and stop there. Prowler Proof’s Performance Plus strikers are exclusive to Prowler Proof, included as standard rather than sold as an add-on. It’s engineered specifically to make the door stronger exactly where it’s tested hardest.
Frequently Asked Questions
A Performance Plus (P+) striker is Prowler Proof’s exclusive, reinforced version of the standard lock strike plate used on sliding security doors. It’s twice as long as industry-standard strikers, fixed with up to twice as many screws, and made from 316 marine grade stainless steel to resist jimmy attacks and corrosion.
They’re standard. Every Prowler Proof sliding security door fitted with a Lockwood triple point locking system includes Performance Plus strikers at no extra cost. They aren’t sold as a premium add-on.
A jimmy attack is when an intruder uses a tool like a screwdriver or crowbar to pry the lock away from the door frame at the strike plate. It’s a common attack method on sliding doors, which is why AS5039 includes a specific jemmy test for compliant security doors.
Performance Plus strikers were developed in partnership with ASSA Abloy specifically for use with Lockwood 8653 triple point locking systems. They come standard wherever that lock is fitted on a Prowler Proof sliding security door.
Get Sliding Security Doors Built to Perform
Performance Plus extended strikers are just one more way Prowler Proof creates a safer place at your place — built in as standard, not sold as an extra.
Ready to secure your home with a sliding security door built to perform? Get a free quote from your nearest Prowler Proof Certified Dealer today.
