Pro-Lok - Strike Plate – Double Lip w/ 5-1/2″ Center

That is exactly what the double lip strike is built for. It reinforces two locks, or a deadbolt paired with a handle set, on 5-1/2 inch or 6 inch centers. Measure center of deadbolt to center of the knob or lever latch on your door. If it lands on either of those two dimensions, the plate lines up. If your two locks are spaced anything else, this one will not line up and you need a different center-to-center strike.

The plate measures 11 x 1-5/8 inches. The 1-5/8 inch dimension is the one that matters on most jambs: a standard residential jamb face is narrower than that once the door stop is accounted for, so check the flat area of your jamb between the stop and the casing before ordering. The 11 inch run spans both lock points, which is where the anti-kick strength comes from, so you need a clear 11 inches of jamb with no hinge or strike obstruction in the way.

No, the screws come with the Pro-Lok double lip strike. It ships with both 1-1/4 inch and 3 inch screws. The 3 inch screws are the ones doing the real work, they pass through the jamb and bite into the framing stud behind it, which is what stops a kick-in. Short screws into the jamb alone are what fail. Use the 3 inch screws at the lock points.

A double lip strike is one long plate that replaces both individual strikes on a door, catching the deadbolt and the latch in a single piece of metal anchored to the framing. Two separate strikes each rely on their own small screw pattern, so a kick concentrates force on whichever one is weakest. The single 11 inch plate ties both lock points together and distributes the impact along the jamb. Use it where tampering or forced entry is the concern. If your two locks are not on 5-1/2 or 6 inch centers, individual strikes are your option.

It is stated for residential, commercial, and industrial use. Property managers can standardize on the same plate across apartment entries, office suites, and back-of-house doors, which keeps one part number in the truck stock rather than three.

Yes. The plate is stated to serve double locks or deadbolt and handle set combinations on 5-1/2 inch or 6 inch centers, so a mixed portfolio where some doors were prepped at one spacing and some at the other can be handled with a single part. Confirm the spacing door by door before you order in quantity, since anything outside those two dimensions is a different part.

Brass. That is the single finish offered, so on a building where the existing hardware is satin chrome or oil-rubbed bronze, the strike will not match the lockset visually. On most installs the strike sits in the jamb rebate and is largely hidden by the closed door, so the mismatch is minor, but worth knowing if the doors sit open in a lobby or corridor.