Deltana 4SBCS 4" Solid Brass Surface Bolt, Concealed Screws, HD

That is what a surface bolt is for. The 4SBCS mounts on the face of the door rather than being mortised in, and the bolt shoots into a strike at the head or the sill to hold the inactive leaf fixed while the active leaf swings. Nothing gets routed into the door edge, so it goes onto an existing pair without machining. It's a 4 inch bolt in solid brass, so plan on a flat face wide enough to take the 4 inch plate.

Four inches is the plate length, not the reach. A 4 inch bolt like the 4SBCS works where the strike is right at the head or the sill next to the bolt, which is the usual case on a pair of doors or a closet leaf. If you need to throw up into a header well above the top rail, or you want the lever within reach from standing height on a tall door, go longer, the Emtek 8511 solid brass surface bolt is a 6 inch, and the Ives SB360 comes in a 12 inch length.

No door machining. Surface mounting means the bolt body screws to the face of the door, so the only prep is the strike, a hole or strike plate in the jamb, header, or floor where the bolt lands. That makes it a straightforward retrofit on doors already hung, and it's why property managers use these to add a second point of security without pulling a door.

Specify a fire rated bolt instead. The Ives SB1630 carries a 3-hour UL listed fire rating and is a heavy duty steel locking surface bolt with a 1 inch throw and keyed security. The Ives SB1600 is fire rated as well and is heavy duty steel with a 3-1/2 inch throw, and the Ives SB360 is fire rated heavy-duty steel with a 1-1/4 inch throw in a 12 inch length. If you want brass on a rated opening, the Ives SB1640 is a fire rated brass surface bolt with a 1 inch throw. The Deltana 4SBCS is a solid brass surface bolt built as a contemporary concealed screw bolt for security and appearance.

The mounting screws are hidden behind the bolt housing instead of sitting exposed on the face of the plate. Two things come out of that: nobody on the wrong side of the door can back the screws out, and the finished face reads clean with no fastener heads breaking it up. That is the difference between the 4SBCS and a conventional exposed screw surface bolt.

Nine, and they cover both the warm and the cool side so you can match existing door hardware: Polished Brass, PVD Polished Brass, Antique Brass, Polished Chrome, Brushed Chrome, Brushed Nickel, Antique Nickel, Oil Rubbed Bronze, and Paint Black. If you're standardizing a building, PVD Polished Brass is the one to look at where the brass has to hold its color under handling and cleaning.

No. It's a manual throw bolt, you operate it by hand from the side it's mounted on, with no cylinder and no key. If the requirement is that only authorized staff can release the inactive leaf, the Ives SB1630 is a heavy duty locking surface bolt with keyed security and a 1 inch throw.

The Delaney BV7600 is a decorative solid brass surface bolt, and the Delaney 410309 is a plain solid brass surface bolt in the same family. The Emtek 8511 is also solid brass, in a 6 inch length. The Deltana 4SBCS itself is a contemporary concealed screw design in solid brass, offered in finishes including Oil Rubbed Bronze, Polished Chrome, Polished Brass, Antique Brass and PVD Polished Brass, so start from the finish you need to match.

The Deltana 4SBCS is a solid brass surface bolt classified for commercial use and mounted on the door surface. Where the abuse level pushes past decorative brass, the steel options are heavier: the Ives SB1600 and SB1630 are both heavy duty steel, the Ives SB360 is heavy-duty steel in a 12 inch length, and the ABH HD1805 is a heavy duty bolt with a 3/4 inch stainless steel bar. Brass keeps the finish match with other decorative trim; steel gives you the heavier bar.

Treat them as different products rather than a swap. The Trimco 4800 Series is its own surface bolt series, while the Deltana 4SBCS is a solid brass 4 inch surface bolt with concealed screws. The concealed screw pattern means the mounting holes and plate footprint are specific to the Deltana, so verify the hole pattern against the door before assuming an existing 4SBCS installation accepts the Trimco.

Order the 4SBCS in the same finish family as the existing trim. The nine finishes, Polished Brass, PVD Polished Brass, Antique Brass, Polished Chrome, Brushed Chrome, Brushed Nickel, Antique Nickel, Oil Rubbed Bronze, and Paint Black, cover the standard decorative range, so for a brass suite go Polished or Antique Brass, for satin chrome or nickel trim go Brushed Chrome or Brushed Nickel, and for a dark bronze package go Oil Rubbed Bronze. The bolt is solid brass under the finish in every case.

Individually. The 4SBCS is sold each. Most pairs of doors take two, one throwing up into the header and one down into the threshold, so order two per inactive leaf if you're bolting top and bottom.