Cal-Royal ULT700 Grade 2 Heavy duty One-Way Deadbolt Lock

The Cal-Royal ULT700 is a Grade 2 heavy-duty one-way deadbolt lock from Cal-Royal's T300 Series cylindrical deadbolt line, carrying ANSI Function E1161. The deadbolt is thrown or retracted by key only from the exterior. There is no thumbturn and no interior trim. A blank internal plate covers the interior face with exposed mounting screws. The bolt automatically deadlocks when fully thrown. The cylinder recesses into the door to resist physical blows attempting to shear or pull the lock from the door face. American Locksets is an authorized Cal-Royal dealer stocking the ULT700 with same-day shipping and free shipping on all orders over $300.

Cal-Royal ULT700 Deadbolt: What One-Way Means

One-way deadbolt means the lock operates from one side only. On the ULT700, that side is the keyed exterior. There is no mechanism on the interior face to retract or project the deadbolt. A blank cover plate is installed on the inside, which covers the lock cylinder bore and the mounting screws but provides no operating function.

This design is specified when the requirement is exterior key control over a deadbolt with no interior access to the bolt mechanism. Gates, mechanical room access panels, storage cage doors, electrical room entries, and roof hatch access points are common ULT700 applications. The occupant on the interior side has no ability to lock or unlock the deadbolt, which is the deliberate design intent. If interior deadbolt operation is also needed, the CL500 (single cylinder, thumbturn inside) or CL600 (double cylinder) is the correct T300 Series function instead.

The ULT700 is available with an SFIC (Small Format Interchangeable Core) prep as the ICULT700 variant for facilities running BEST, Falcon, or Arrow IC key systems.

Cal-Royal ULT700 Specifications

• SKU: ULT700

• ANSI Function: E1161, One-Way Deadbolt with Internal Plate

• Operation: Deadbolt thrown or retracted by key only from exterior. No interior operation. Bolt auto-deadlocks when fully thrown

• Interior Trim: Blank plate with exposed screws. No thumbturn, no lever, no interior cylinder

• Grade: ANSI Grade 2. Cal-Royal T300 Series Heavy Duty

• Cylinder: Recessed cylinder construction resists forced entry. 6-pin solid brass C keyway standard

• Optional Keyways: Schlage E, Schlage C-K, Russwin D1-D4, Corbin 59/60, Sargent LA/LB/LC, Falcon/Weiser E, Arrow A, Yale 8, Yale GA, and Kwikset. High security cylinders available: Medeco, ASSA, Kaba, Cal-Royal HSK. Specify keyway at order

• Interchangeable Core: SFIC version available as ICULT700. Accepts BEST, Falcon, and Arrow compatible 6 or 7-pin cores. Prefix IC before part number. Available combinated or uncombinated with temporary construction cores and factory keying options

• Backset: Fixed 2-3/4 inch standard. 2-3/8 inch backset available by specification

• Door Thickness: 1-3/8 inch to 1-3/4 inch standard

• Strike: Included standard

Where the ULT700 Gets Specified

The ULT700 is on hardware schedules wherever a keyed deadbolt is required on a door that does not need interior deadbolt control. This includes:

Storage rooms and utility spaces where the person inside does not need the ability to deadbolt themselves in or out. Gate hardware on chain link or metal frame gates where one-way access control is the requirement. Electrical, telecom, and mechanical room doors in commercial buildings where only authorized personnel with a key should enter and there is no reason for anyone inside to operate the bolt. Fire sprinkler and pump rooms where interior access is service-only and interior deadbolt manipulation is not required.

The blank internal plate provides a clean finished appearance on the interior face while clearly communicating to the person inside that there is no interior locking mechanism.

Browse all Cal-Royal Grade 2 T300 Series deadbolts, the complete Cal-Royal Cylindrical Deadbolts catalog, and all Cylindrical Deadbolts at American Locksets.