Yes. The 5057 knob with 5002 rose covers doors from 1.37 inches up to 1.75 inches thick, so it works on both the common 1-3/8 inch interior door and a 1-3/4 inch door. Anything thicker or thinner falls outside the range.

Half Pair is a single knob and rose for one face of the door. Pair is both sides. Pair (PINNED) is the two-sided set with the knobs pinned to the spindle. Order a half pair when you only need one side, for example a half dummy, or when you are mixing a knob on one face with a lever on the other.

It's a residential-duty trim from Baldwin's Estate Series in forged brass, intended for interior residential openings rather than commercial traffic. For corridor or stairwell doors in a commercial or multi-family common area, specify a commercial-grade lockset instead and keep this one for unit interiors.

The 5057 is trim, not a complete lock. Paired with roses it builds interior passage and privacy sets, full dummy and half dummy, and it can also be used as trim on a mortise lock set alongside handle set trim or escutcheon plates. The lock or latch case is a separate order.

Yes. Baldwin's knobs and levers in this family are sold as a pair or individually so you can put a knob on one face and a lever on the other, and combine them with roses for passage or privacy sets. Order the Half Pair type to get one side only.

Projection is 2.125 inches off the door, with a knob diameter of 2.375 inches. That matters where a door swings back against a wall, a return jamb, or an adjacent casing, and it is the number to check on tight closet or corridor openings.

Fourteen finishes: Polished Brass (003), Non-Lacquered Brass (031), Vintage Brass (033), Satin Brass (044), Satin Brass and Black (050), Polished Nickel (055), Satin Nickel (056), Satin Brass and Brown (060), Graphite Nickel (076), Oil Rubbed Bronze (102), Venetian Bronze (112/11P), Satin Black (190), Polished Chrome (260), and Distressed Oil Rubbed Bronze (402). 031 Non-Lacquered Brass is the living finish that will age; if you are matching existing hardware on other doors, match the number, not just the name.

Baldwin publishes a drilling template specific to the 5057, and it is linked from the product documentation as the drilling instructions. Use it to lay out the bore and spindle before you cut, especially on a retrofit where the existing prep was made for another brand's rose diameter.