Yes. The 5112 lever set covers doors from 1.375 inches up to 1.75 inches thick, so a standard 1-3/8 inch interior door and a 1-3/4 inch door both work without a thickness kit.

It is a passage set. The 5112 lever pairs with roses and has no privacy button or key cylinder, so it latches the door closed but will not lock it. For a bathroom or bedroom you need a privacy function instead.

The 5112 is built on a 2-3/8 inch backset and uses the 2.125 inch standard door preparation, so it drops into a typical residential bored door with a 2-1/8 inch cross bore. If your doors were prepped at the 2-3/4 inch backset, this one will not line up.

The lever is reversible, so a full pair works on either hand without ordering a specific handing. Handing only matters if you are buying a single half pair, where left hand and right hand are ordered separately.

A Pair gives you levers for both faces of the door, which is what you want for a normal passage opening. A Half Pair is one side only, for a single-sided application or to replace a damaged lever and keep the finish matched. There is also a Pair (PINNED) option, where the lever is pinned to the spindle.

Projection is 2.6 inches off the face of the door, with a 4.7 inch lever grip. Worth checking against a door that swings back against a wall or a narrow hallway, and against any adjacent trim or casing the lever could clash with.

Fourteen finishes: Polished Brass, Non-Lacquered Brass, Vintage Brass, Satin Brass, Satin Brass and Black, Polished Nickel, Satin Nickel, Satin Brass and Brown, Graphite Nickel, Oil-Rubbed Bronze, Venetian Bronze, Satin Black, Polished Chrome, and Distressed Oil-Rubbed Bronze. Baldwin finish numbers are consistent across the Estate line, so matching by number (055 Polished Nickel, 102 Oil-Rubbed Bronze) is the reliable way to keep a house or a floor of units consistent.

Yes. Baldwin ships the passage set complete with the latch and mounting hardware for the door, so nothing extra is required for a standard bored opening. You would only add a strike or filler if the frame prep does not match.

The Baldwin Estate 5112 lever is offered as a pair, a pinned pair, or as a half pair in either left hand or right hand, so a single left-hand leaf can be ordered on its own. If you want a different maker for that same single-leaf need, the Imperial USA TH1100 Series lever handle is sold specifically as a left hand unit. Note the Baldwin 5112 itself is a reversible lever, so a half pair is chosen by which side of the door it lands on rather than by a fixed handing built into the part.

The Baldwin Estate 5112 lever is an Estate Series residential lever with a round rose, 4.7 inch grip length and 2.6 inch projection, and it is carried in fourteen finishes including polished brass, non-lacquered brass, polished and satin nickel, graphite nickel, oil rubbed bronze, satin black and polished chrome. The Imperial USA comparable is a TH1100 Series lever handle in a left hand configuration. If you are matching a specific plated or living-finish look across a run of doors, the 5112 gives you the broader finish palette to work from within one series.