EN 1627-1630 RC4 — Highest Sectional Door Security Class

RC4 certification demonstrates tested resistance against an experienced attacker using power tools including drills, jigsaws and angle grinders — the highest attack-resistance class achievable in a sectional overhead door format.

Structural Reinforcement Throughout

Every structural component of the RC4 is strengthened beyond the RC3 specification — additional panel reinforcement, heavier locking hardware, and reinforced mounting points make forced entry extremely difficult even with power tools.

Insulation Without Compromise

RC4 security rating is achieved without sacrificing thermal performance — the door delivers meaningful insulation value with full thermal bridge elimination for facilities that require both high security and energy-efficient building envelopes.

What Is the HFI RC4?

The HFI RC4 is the highest Resistance Class sectional overhead door in the Hold Fast Industries range — EN 1627-1630 RC4 certified, providing independently tested resistance against an experienced attacker equipped with power tools including drills, jigsaws and angle grinders. RC4 is the appropriate specification for high-value storage, defence and government facilities, critical infrastructure buildings, pharmaceutical and currency storage, and any application where the threat of a determined attack with power tools is a design criterion.

RC4 certification requires that the door withstand not just a second set of hand tools (RC3) but the additional application of powered cutting and drilling equipment for the defined test period. The panel, frame, locking hardware and all structural connections must pass the test as an assembled, installed system. This is a physically demanding standard — very few sectional overhead doors achieve RC4 certification, and those that do represent a fundamentally different level of engineered security.

Technical Specifications

SpecificationsValue
Security RatingEN 1627-1630 Resistance Class RC4
Attack ResistanceResistant to experienced attacker with power tools (drill, jigsaw, angle grinder)
Panel ConstructionReinforced sandwich panel — above RC3 specification throughout
LockingLocking
InsulationFire-resistant PU foam, CFC-free — full thermal bridge elimination
Certifications CE Marked · EN 1627-1630 RC4 · EN 10326

Industries Served

Where the HFI RC4 Here Is Used

Logistics & Warehousing

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Technical Documentation

Download the full product specification sheet, installation guide, and compliance certificates.

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