Deltana MB175U19 Mortise Bolt Black Finish

Product Description

The DELTANA MB175U19 is a mortise bolt designed for door hardware applications requiring a concealed, non-locking slide mechanism. The bolt installs flush within a mortised cavity in the door edge, providing a clean, low-profile hold for inactive door leafs in pairs or for securing doors at the top or bottom rail. The black finish (U19) delivers a uniform, matte appearance suited to commercial and residential door hardware specifications. Weighing 0.2 pounds, this unit ships and installs as a single piece.

This mortise bolt is appropriate for use on wood or hollow-metal doors in residential entryways, commercial storefronts, and interior applications where an unobtrusive flush bolt is required. Typical installations include inactive door leafs in double-door sets, french doors, and closet or utility access doors. It is sized to fit standard mortise pocket preparations and is ordered and sold individually.

Key Features

• Black finish (U19) provides a consistent, matte appearance compatible with dark hardware sets
• Compact form factor at 3 inches long, 2.5 inches wide, and 1 inch in height
• Mortise-style installation sits flush with the door edge for a clean, concealed look
• Lightweight at 0.2 pounds, suitable for single-person installation
• Sold as a single unit for precise quantity ordering

Compatibility

Designed as an OEM-style replacement or new-installation mortise bolt for standard door edge mortise preparations in residential and light commercial applications.

Installation Notes

Installation is typically performed by a finish carpenter, door hardware installer, or licensed locksmith. Power down any electronic access control or electric strike on the door assembly before beginning work. The mortise pocket must be routed or chiseled to the correct depth and dimension to allow the bolt body to sit fully flush with the door edge. Follow applicable building code requirements for door hardware when specifying this bolt for egress or fire-rated door assemblies.