Deltana CSA10 Colonial Casement Stay Adjuster, 10"

The CSA10 is a casement stay, the arm that holds an out-swinging casement sash open at a set position instead of letting the wind take it. It mounts as a two-piece set: a 2-1/4 inch sash plate on the window sash and a 1-3/4 inch sill plate on the frame or sill, with the 10 inch arm between them. It is a positioning and holding device, not a lock or a latch, so a casement fastener or lock is still needed to secure the window shut.

The arm on the CSA10 is 10 inches long, so that arm length sets the maximum swing you can hold the sash at, with shorter hold positions available along the stay. Measure from where the sash plate lands on the sash to where the sill plate lands on the frame before ordering, because on a deep sill or a wide reveal a 10 inch arm may not reach the opening you want.

Depends on your existing footprint, and it's worth checking before you pull the old one. The CSA10 gives you a 2-1/4 inch sash plate and a 1-3/4 inch sill plate to work with. Hold those against the old plate outlines: if the existing plates are the same size or smaller, the new plates cover the old holes and you can reuse the same mounting area. Larger old plates will leave holes showing on the sash.

Solid brass through the body, not plated pot metal or steel. That matters on a casement, since the stay sits in the weather line of an operable window and steel arms rust and seize at the pivot. Brass also means the finish is applied over a stable base metal on every one of the nine finishes offered.

Nine finishes: PVD Polished Brass, Polished Brass, Antique Brass, Oil Rubbed Bronze, Brushed Nickel, Antique Nickel, Polished Chrome, Brushed Chrome, and Paint Black. If you're matching existing brass window hardware that has held its color, the PVD Polished Brass is the one to look at, since PVD is a deposited coating rather than a lacquer. For a building where openings get repainted or where the sash is dark, Paint Black and Oil Rubbed Bronze are the ones that disappear against the sash.

Yes, and that's the usual reason to buy it. Every unit is the same 10 inch arm with a 2-1/4 inch sash plate and 1-3/4 inch sill plate, packed individually with matching screws, so a property manager replacing failed stays across a floor of casements gets an identical footprint on every opening. The one thing to fix before you order a quantity is the finish, since all nine are the same part otherwise.

The CSA10 is a straight arm running between a sash plate and a sill plate, so it isn't handed the way a lockset is. The decision you're making instead is which side of the sash you mount it on and whether the 10 inch arm clears the sill and any hardware in its sweep path on that side. Order the same part for left and right openings.

Rated commercial by Deltana, and the solid brass build is what backs that up on an opening that gets cycled daily. The colonial styling suits historic and traditional openings, which is where these are most often specified, but the material and duty rating hold up in hospitality, multi-family, and institutional casement applications too.