Staircase Fire-Rated Door in Yellow

NEXA Fire-Rated Stairwell Steel Door – Yellow | Certified Safety with High Visibility Design

The NEXA Yellow Fire-Rated Stairwell Door offers a combination of enhanced safety, superior engineering, and practical visibility for emergency routes.
Officially approved by the Fire Department, this model provides 240 minutes of certified fire resistance, validated through Efectis Turkey laboratory testing and technical certification from the Building & Housing Research Center (BHRC) of Iran.

It is suitable for all types of projects — residential, public, or industrial — and can be installed in multi-story parking lots, hospitals, commercial centers, offices, and apartment buildings, regardless of height or fire zone classification.

The bright yellow color provides a functional safety advantage: in large buildings and complex evacuation routes, the door’s high visibility helps occupants quickly identify emergency exits during critical situations.

The handle and panic bar finishes are customizable, and the door color can be adjusted to match your project’s design requirements.

Body and Frame Construction

Door Leaf:

• Made of galvanized steel sheet, thickness 1.0 mm

• Reinforced with integrated mechanical joints for improved rigidity and strength

Frame:

• Galvanized steel frame, thickness 1.25 mm, fully welded

• Designed for high endurance and precise installation

Core Insulation:

• IzoCell 505 advanced nano-engineered fire-resistant insulation with a cellular structure

• Includes SABIC thixotropic flame-retardant resin

• Internal reinforcement skeleton for stability under pressure

• Side stiffeners to resist twisting and bending near hinges

• Double steel plates behind handle, lock, and hinge zones to ensure strong mechanical fastening

Hinges and Assembly

• Equipped with three triple-joint cylindrical steel hinges, specifically designed for fire-rated and vault doors

• Fully welded connections provide exceptional mechanical durability and long service life

Surface Preparation and Coating

Before painting, all steel components undergo:

• Grinding, degreasing, and acid washing for optimal adhesion and corrosion resistance

Paint System:

• Electrostatic powder coating, oven-cured under standard heat treatment

• 80-micron thickness with uniform finish applied via conveyor (rail) technology

• Highly resistant to scratches, moisture, and environmental damage

• Custom RAL colors available upon request

Standard Color: RAL 1023 – Industrial Yellow (high-visibility finish)

Fire and Smoke Sealing System

• Certified intumescent fire & smoke seals expanding up to 500% under heat exposure

• One-piece steel threshold, fully sealed against smoke and flame penetration

Door Closer

• Two-speed hydraulic overhead closer (China-made)

• Adjustable dual-valve mechanism provides controlled closing in two stages

• Ensures smooth, silent operation in high-traffic environments

Additional Features

• Includes eight decorative plastic caps to conceal mounting points for a clean appearance

• Fully symmetrical design, allowing installation as either left-hand or right-hand opening

• All components — hinges, locks, and handles — are bi-directional, ensuring flexibility during installation