Deltana WLS9 Window Sash Lock, 1-1/8" x 3"

The WLS9 sash lock mounts on 2-1/8 inch center-to-center screw holes, with a base measuring 1-1/8 x 3 inches. If the lock you're pulling off has the same 2-1/8 inch hole spacing, it drops onto the existing holes. If the spacing is different, the 3 inch footprint gives you a little room to cover slightly off holes, but you'll be drilling fresh pilot holes in the sash.

No. A sash lock like the WLS9 is a cam lock for the meeting rail of a double-hung or single-hung window, where the top and bottom sash overlap. A casement needs a locking handle or a multipoint tie-bar, and a horizontal slider needs a slider latch or a track stop. Nothing about the 1-1/8 x 3 inch cam lock adapts to either one.

The WLS9 is a two-piece sash lock: the cam body fastens to the lower sash meeting rail and the strike keeper mounts on the upper sash directly above it. Unit of measure is each, and that unit is the complete lock set for one window. You supply nothing but the sash itself.

Solid brass, not cast zinc with a coating over it. That's the reason it holds up on a window that gets worked daily and why the finishes wear the way brass wears. For a property manager replacing failed die-cast locks across a building, the material is the difference that stops the callback.

Eleven finishes: PVD Polished Brass, Polished Brass, Antique Brass, Brushed Brass, Oil Rubbed Bronze, Polished Nickel, Brushed Nickel, Antique Nickel, Polished Chrome, Brushed Chrome, and Paint Black. PVD Polished Brass is the one to specify if you want the brass look without the recurring polishing, since PVD is a deposited coating rather than a lacquer.

Rated commercial. It's a solid brass sash lock, so it's specified into hospitality, multi-family, and institutional work as often as it goes into a house, and it's the same part either way. If you're standardizing window hardware across a portfolio, one finish across every opening is a single order line.

The WLS9 is sold each, so the price you see is for one lock. On a standard double-hung, one centered on the meeting rail is the usual install. On wide sash, a pair set in from each stile pulls the rails together more evenly and stops the middle from bowing, so count two per window when you're ordering for wide openings.