Specifications:
The document outlines the specifications for Door Class C, designed for internal accommodations requiring fire protection class C. These doors are suitable for mounting in 25 mm thick metal or non-metal walls and can open outward from sanitary units.

Execution:
The door frame is constructed from 1.5 mm cold-rolled steel, welded into a frame. The door leaf consists of two cassettes made from 0.7 mm vinyl-coated galvanized steel, filled with mineral wool, and connected by riveting. It includes a mortise door lock and stainless steel hinges, with the lock being chromium plated and polished.

Delivery Range:
Delivery includes a complete door with fittings, excluding holes and fixing elements.

Packing, Transport, Storage:
Each door leaf is protected with hardboard for storage and transport, packed in polyethylene foil, and can be moved using forklifts or cranes. They can be stored in rows and stacks.

Division, Mark, and Finishing:
Types include I (3 mm sill gap) and II (15 mm sill gap for ventilation). Varieties include left or right-hand doors, with options for kick-out panels, large or small ventilation grates, and sanitary lock indicators. Finishing options for the door leaf include PVC steel sheet or painted, with color variations from the hinge side and the other side. The door frame can be enamelled or primed.

Example of Designation:
An example designation is provided for a Door Class C with specific features and finishes, corresponding to drawing no N 24-83/34-426.