Simple Gray Fire-Rated Metal Door

Structure of the NEXA Simple Gray Steel Fire Door

Door Leaf and Frame:

• Steel body (galvanized sheet) – 1.0 mm thickness

• Steel frame (galvanized sheet) – 1.25 mm thickness

Core Insulation:

• IZOCELL nano fire-resistant insulation, model 505

• Integrated bonding design to enhance mechanical durability of the door leaf

• Fire-retardant thixotropic resin (sub-class type) for advanced heat protection

Reinforcement Frame:

• Internal steel structure with side stiffeners to resist warping and bending near the hinge area

• Double steel plates behind the handle, panic bar, and hinges for maximum screw and hardware strength

Hinges:

• Three heavy-duty cylindrical steel hinges, three-piece design, specifically for fire-rated and vault doors

• Connection method: Welding

Surface Preparation Before Coating

• Polishing, degreasing, and acid washing to improve paint adhesion and extend coating lifespan

Paint and Finish

• Electrostatic powder coating, oven-cured with 80-micron uniform thickness

• Conveyor-based (rail) technology ensures even thickness and baking

• Color code customizable based on client preference

Seals and Hardware

Smoke Seal:

• Fire-rated intumescent smoke seal certified by the Fire Department

• Expands up to 500% when exposed to heat

Door Closer:

• Two-speed hydraulic arm closer, made in China, with dual adjustment screws for smooth closing control

Threshold:

• Integrated fire- and smoke-resistant steel threshold

Plastic Caps:

• 8 decorative plastic caps to cover installation holes for a clean and professional appearance

Symmetry and Installation

The NEXA Simple Gray Steel Fire Door is completely symmetrical, allowing both left-hand and right-hand installations.
It uses bi-directional hinges, locks, and handles, offering flexible installation options for various architectural layouts.