Cold Storage Vertical Lift Doors

Cronax Cold Storage Vertical Lift Doors are purpose-built for environments where space is at a premium. Ideal for cold rooms ranging from 0 °C to –40 °C, they open vertically—eliminating the need for lateral clearance and maximizing usable floor space. Constructed with corrosion-resistant materials like stainless steel or anodized aluminium frames and durable hardware, these doors are ideal for demanding cold and hygienic environments. The door leaf features a double flexible EPDM (or PVC) gasket that guarantees an airtight seal—preventing air leakage, energy loss, and maintaining consistent temperatures.

Insulated with high-performance materials such as PIR foam or PU panels, these vertical lift doors deliver exceptional thermal efficiency. The tightly sealed construction, combined with insulation, helps preserve cold-room integrity and significantly reduces energy consumption. Available in both manual and motorized versions, Cronax Vertical Lift Doors are customizable to meet specific layout requirements.

ENGINEERING HIGHLIGHTS
SMART CONTROL SYSTEM
CUSTOMIZATION OPTIONS

Door Type	Cold storage vertical lift doors designed for large clear openings in cold rooms and freezer facilities, operating vertically to save lateral space.
Primary Application	Refrigerated warehouses, distribution centers, food processing plants, logistics hubs, and industrial freezer facilities with limited side room.
Temperature Range	Optimized for chilled and deep-freeze environments: Chiller use: 0 °C to +10 °C Freezer use: –18 °C to –40 °C (with heated frame & sealing systems)
Leaf Thickness	Typically 80 mm, 100 mm, or 120 mm thick insulated panels depending on insulation requirements and size.
Maximum Clear Opening	Standard single leaf up to 4,500 mm wide × 6,000 mm high; available in larger custom-built sizes for warehouse operations.
Insulation	High-pressure injected polyurethane (PU) or PIR foam, density approx. 40–45 kg/m³ for superior thermal performance and energy efficiency.
Leaf Construction	Double-skin sandwich construction with galvanized steel, stainless steel, or aluminum sheets laminated to insulated core; reinforced with stiffeners for durability.
Frame Construction	Heavy-duty galvanized steel or stainless steel vertical frames with integrated thermal breaks and heated sections for freezer use.
Seal & Gasket System	Flexible EPDM/silicone gaskets on perimeter and intermediate sections; optional heated gasket systems to prevent frost buildup in sub-zero conditions.
Compliance & Standards	Designed in compliance with HACCP hygiene standards and EN/ISO norms for insulation, durability, and industrial safety.

Drive System	Heavy-duty electromechanical drive with counterweight or spring-assisted lifting mechanism for smooth vertical motion.
Power Supply	Three-phase 400/415 V, 50/60 Hz; energy-efficient motor sized for frequent operation in industrial facilities.
Control Panel	Microprocessor-based control unit with soft start/stop technology, overload protection, and IP-rated housing suitable for cold environments.
User Controls	Wall-mounted push-button station (Open/Stop/Close); optional remote control, pull cord switches, and access-controlled operation.
Activation Devices	Compatible with motion sensors, radar detectors, loop detectors, RFID, and interlock systems for automated logistics flow.
Safety Systems	Photo-eye sensors, obstruction detection, safety edges, emergency brake systems, and mechanical fall protection to prevent accidents.
Positioning	Encoder/limit switch arrangement ensures precise positioning and long service life of components.
Emergency & Backup	Manual chain hoist or crank system for safe manual operation during power failure; optional UPS backup available.
Integration	Seamless integration with warehouse management, cold storage monitoring, and fire/safety alarm systems.

Surface Finish	Standard pre-painted galvanized steel in hygienic white (RAL 9002). Optional stainless steel cladding (304/316) or aluminum for enhanced corrosion resistance.
Color Options	Available in full RAL powder-coated finishes to match project or corporate identity requirements.
Vision Panels	Optional heated double-glazed vision panels for safe visibility in cold/freezer environments without condensation.
Threshold Options	Optional heated threshold for freezer models; reinforced stainless-steel kick plates available for high-traffic use.
Sealing Packages	Magnetic and compression-type seals around full perimeter for an airtight and energy-efficient closure.
Accessories	Protective bumpers, stainless steel hardware, canopy hoods, panic release systems, and LED signal indicators.