Fire safety keeps getting stricter, and routine inspections already check fire rated shutter facilities on a set schedule. The fire rated roller shutter acts as a fire and heat barrier across large openings — usually where a fire wall would be awkward: open elevator halls, escalators, wide department-store floors, and exhibition hall openings where fire doors and windows do not fit.
Before you buy, the material knowledge before buying fire rated shutter systems comes down to one rule: know the structure. This guide covers the fire rated shutter material choices that decide whether the door holds.
The Fire Rated Roller Shutter: Know the 13 Parts
Before you buy, understand the build. The door has 13 parts: curtain plate, bottom bar, rails, brackets, drum, housing, control box, motor, limiter, lintel, manual quick-release, button switch, and safety device. The body does the fire blocking; the lintel and rails do the smoke blocking. So when you buy, watch the material of the body, lintel, and rails. RHIDOOR supplies these as built-to-spec parts.
Curtain — the Core Fire Rated Shutter Material
RHIDOOR’s steel fire rated shutter uses 1.0 mm galvanized steel, filled with aluminum silicate cotton. The premium (inorganic) shutter uses a 4-layer build: 0.32 mm blue decorative cloth, 2.0 mm ceramic fiber cloth, 15 mm fire blanket, and 0.32 mm heat-radiation cloth. These materials hold a fire-resistance duration above 4 hours and sharply limit spread.
Lintel, Pre-Roll, and Bottom Beam
RHIDOOR fits 1.0 mm steel fire rated shutter slats as the lintel, which are fire- and smoke-rated. We design pre-roll in from the start — the pre-roll length reaches 500 mm, which cuts the pull on the first slat and stops the curtain from coming off.
The bottom beam is 40×70 mm at 1.5 mm, with a counterweight so the curtain drops by its own weight if the thermal fuse fails, bringing the door down faster.
Rails and Smoke Control
RHIDOOR uses two rail types: embedded (90 mm deep, 1.5 mm) and exposed (90 mm deep, 3 mm). Both carry anti-smoke strips that strongly limit smoke spread.
Curious what goes into the door? See what materials fire rated roller shutter doors are made of, then explore the fire rated roller shutter we build to spec.
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Ready to upgrade your facility? RHIDOOR builds fire rated roller shutters to your spec — MOQ 1 pc, 15-day lead time — and we provide on-site guidance, not just a product. Reach our team at +86 18938501256, WhatsApp wa.me/8618938501256, or email ruihua@rhidoor.com.