- Description
- Application
- Specification
- Warranty
- Measure
SeceuroDoor 75 Heavy Duty Industrial Shutter (20 Gauge)
The SeceuroDoor 75 (20g) is a heavy-duty upgrade to our standard commercial shutter range, designed specifically for larger apertures and higher-frequency applications. Manufactured from a thicker 20 gauge (20swg) galvanised steel, this door offers superior structural rigidity, making it the primary choice for industrial buildings, large warehouses, and agricultural units where size and durability are paramount.
While retaining the traditional reliability of the 75mm curved steel lath, the increase in material thickness ensures this door performs reliably across wider and higher spans without the deflection or "bowing" issues often associated with lighter gauge curtains.
Heavy-Duty Construction
The core advantage of this model is the curtain specification. While standard commercial shutters use a lighter 22 gauge steel, this model utilizes 20 gauge steel (approx. 0.9mm thick).
- Reduced Slat Deflection: The thicker steel profile significantly reduces curtain flexing over large widths, preventing the operation issues seen in cheaper, lighter doors.
- Increased Security: The heavier curtain provides a more robust physical barrier against forced entry.
- Durability: 75mm scrolled interlocking laths are formed from high-quality galvanised steel, designed to withstand the rigours of an industrial environment.
- Galvanised Finish: Supplied in natural galvanised steel as standard (guides and endplates included), offering a tough, utilitarian finish that resists corrosion.
3-Phase Industrial Power (415V)
Unlike standard single-phase doors which are limited by duty cycles, this SeceuroDoor model is powered by a high-specification GfA 415V 3-phase industrial motor. This allows for:
- High Frequency Use: The 3-phase motor is capable of performing significantly more operations per day, making it suitable for busy logistics bays and car parks where doors are constantly in motion.
- Smooth Operation: The increased torque and power of the industrial motor ensures consistent, smooth lifting of the heavy 20-gauge curtain.
- Reliability: GfA motors are widely recognised as the industry standard for reliability in commercial door automation.
Installation Requirements
This door is designed primarily for a Traditional Internal Face Fit, mounting behind the structural opening to a steel or masonry frame. Due to the heavy-duty nature of the drive system, special consideration must be given to side room clearances.
Outboard Motor Setup
The direct-drive or chain-drive 3-phase motors used on this door are substantial units. They are installed in an "outboard" configuration, meaning the motor sits on the outside of the endplate rather than inside the barrel.
Critical Requirement: You must ensure you have sufficient side room on the drive side to accommodate the motor unit projecting beyond the guide width.
Summary Specification
- Curtain: 20 gauge (0.9mm) 75mm galvanised steel lath.
- Motor: GfA 3-Phase 415V Industrial Operator (Chain or Direct Drive).
- Usage Class: Medium to High frequency (capable of intensive daily cycling).
- Mounting: Internal Face Fit (Structural steel/masonry required).
- Finish: Galvanised steel standard (Powder coating available on request).
Construction Specification
The SeceuroDoor 75 (20g) is built to a rigorous industrial standard, specifically designed for larger openings or high-security applications where standard lighter slats are insufficient.
- Curtain Material: 20 Gauge (approx. 0.9mm) Galvanised Steel.
- Lath Profile: 75mm traditional scrolled steel lath.
- Construction: Single skin interlocking slats with a heavy-duty T-rail bottom section.
- Finish: Natural Galvanised Steel (Standard).
Motor Control and Operation Options
Powered by a heavy-duty GfA 3-Phase (415V) Industrial Motor, this door offers high torque and reliability. We offer three tiers of control logic to suit your operational requirements and safety obligations:
1. Hold-to-Run (Basic / 'Deadman')
The most economical solution for sites where budget is the priority. The door is operated via an internal wall-mounted push button.
- Operation: The user must press and physically hold the button for the entire duration of the cycle. Releasing the button stops the door immediately.
- Safety: Because the operator is present and in full control of the movement, complex safety edges or beams are not legally required.
- Access Note: This method does not allow for external operation; a separate pedestrian access door is required to enter the building.
2. Impulse Operation (Standard Automatic)
Designed for ease of use, allowing for "one-touch" operation via a wall-mounted control panel.
- Operation: A single momentary press of the 'Up' or 'Down' button fully opens or closes the door automatically.
- Safety Compliance: To comply with safety regulations, this system is fitted with a Safety Edge on the bottom rail. This sensor detects obstructions and automatically reverses the door to prevent crushing or damage.
3. Remote Control (Advanced)
The ultimate solution for vehicular access and busy logistics hubs. This builds upon the Impulse system by adding radio control capability.
- Operation: Operates via handheld remote controls (2 supplied as standard) or the wall control panel.
- Safety Compliance: Includes the mandatory Safety Edge system.
- Recommendation: If the door opens directly onto a public footpath or road, we strongly recommend adding Infra-Red Photocells as a secondary non-contact safety device.
Finish and Colour Options
We offer flexible finishing options to match your building's aesthetic or corporate branding:
- Galvanised (Standard): The natural zinc finish is the most popular choice for industrial applications, offering robust corrosion resistance without the cost of painting.
- Powdercoat: A polyester powder paint finish applied to both sides of the curtain. Ideal for retail or locations where the internal appearance is important.
- Plastisol: A durable leather-grain coating applied to the external face only (internal face is standard primer). This offers superior weather resistance for external elevations.
Bespoke Options: We can mix and match finishes (e.g., coloured curtain with galvanised guides) or source non-standard colours. Please contact us for a custom quotation.
Quality and Compliance
All SeceuroDoor commercial roller shutters are manufactured in the UK to strict quality standards.
- Compliance: Fully CE or UKCA marked. Purchasing compliant products is a legal requirement for commercial use in the UK.
- Manufacturing: Produced within an ISO9001 and ISO14001 certified facility.
- Fit: Made to measure as standard, ensuring a perfect fit for your structural opening.
- Components: We utilize only high-grade steel components and genuine GfA electric drives for long-term reliability.
SeceuroDoor Product Warranty
All SeceuroDoor products, including the industrial motor, are guaranteed against defects of material or workmanship by SWS UK, subject to correct installation, maintenance and operation, for a period of 1 year from the date of purchase. This comprehensive warranty provides peace of mind and protection for your investment in premium industrial door solutions.
Extended Warranty for GfA Motors
An exclusive extended 2-year warranty is available on GfA industrial motors when you register each drive using the GfA bluetooth dongle. Registration is straightforward and provides additional benefits including viewing and tracking all registered GfA assets in one place, monitoring ongoing usage patterns, keeping track of drive settings over time, accessing a comprehensive library of fault codes, and synching your service records.
Warranty Coverage
SWS UK will replace or repair any components of our products where the manufacturing process has resulted in a defect occurring during the relevant warranty period, subject to the exceptions and conditions detailed below. For all replacement electrical parts, the warranty period is 12 months or the remainder of the original warranty period, whichever is the longest.
Warranty Limitations and Exclusions
The SeceuroDoor warranty does not cover the following circumstances:
Visual Quality Standards
- Marks, distortion, stains, blemishes, indentations or scuffs which are not observable from at least 3 metres away in natural light (not direct sunlight)
- Minor variations in finish associated with the manufacturing process
- Impact damage or scratches, dents, scuffs or other minor abrasions occurring post-installation
Installation and Maintenance Issues
- Incorrect installation of the product, not following SWS UK's installation instructions
- Incorrect operation of the product or lack of proper care and maintenance in accordance with SWS UK's Operating & Maintenance Manual
- Any modifications made to the product by anyone other than SWS UK
- Use or attempted use of non-SWS UK spare parts
- Repairs or attempted repairs undertaken by any person other than someone specifically authorised by SWS UK
- Any attempt to reduce operating clearances by means of infills or draughtproofing
Normal Wear and Environmental Factors
- Normal wear and tear from regular usage
- Accidental or malicious damage from third parties
- External influences such as extreme or abnormal weather conditions, fire, water, salts, chemicals and bird droppings
- Any fault or surge in the customer's electricity supply
- Any failure of masonry or other structures onto which the product has been fixed
Coastal and High-Corrosion Environments
- Rust or corrosion caused by exposure to saltwater or salty air for products installed within 500 metres of the sea or a large body of saltwater
- For products installed within 2 miles of the sea, the exterior finish of the product is guaranteed for a limited period of 2 years only (regular weekly cleaning with warm water and mild detergent is essential)
Consumables and Consequential Costs
- Consumable items such as fuses, light bulbs or batteries
- Indirect, special or consequential loss or damage howsoever caused, including remedial work costs, call-out fees, tool or plant hire and transport costs
Important Warranty Conditions
The SeceuroDoor warranty covers parts only and does not cover labour costs or consequential costs. This includes but is not limited to call-out fees, transport costs and costs for remedial work for removing and/or re-installing faulty parts. All warranty claims must be reported promptly to allow for timely assessment and resolution.
Product Care Requirements
To maintain warranty validity and prolong the life of your SeceuroDoor product, correct operation and care in accordance with the official Operating & Maintenance Manual is essential. Regular maintenance includes wiping with a damp cloth and mild detergent to remove excessive dirt and grime, ensuring the floor is kept smooth, level and clear of dirt and debris which can damage the rubber seal, and conducting visual inspections to identify any issues before they develop into major problems.
Coastal Installation Requirements
Products installed in coastal environments or high-corrosion areas require enhanced maintenance protocols. Regular cleaning of products in locations within 2 miles of the sea is especially important. Doors should be cleaned thoroughly weekly using warm water and mild detergent with a soft cloth or sponge, allowed to dry naturally. Never use strong detergent, abrasive, caustic or solvent-based cleaners as these will void the warranty.
Visual Quality Assessment Standards
We recommend performing a visual quality check on installation. Carry out the quality check in natural daylight, not direct sunlight. Stand at a distance of 3 metres from the product to view the overall appearance. The product is acceptable if, taking into account the manufacturing process, none of the following is readily visible on the face of the product: marks or distortions associated with the manufacturing process, minor indentations, marks or scuffs on the surface, or paint or stain blemishes.
Making a Warranty Claim
For warranty claims or technical support, please contact Samson Doors on 01933 448 850 or email enquiries@samsondoors.co.uk. Please have your order details, installation date, and a clear description of the issue available. Our technical team will assess the claim and arrange appropriate resolution in accordance with the warranty terms.
Protecting Your Investment
Regular professional servicing and maintenance by qualified engineers will help ensure optimal performance and longevity of your SeceuroDoor product. Samson Doors offers comprehensive maintenance contracts and emergency repair services across the UK to keep your industrial doors operating reliably year after year.
Measuring and Ordering Guide
Important: Unlike domestic roller doors, the pricing and ordering dimensions for industrial electric shutter doors are based on the Opening Width (Daylight Opening) and the Guide Height. Please read the definitions below carefully.
Ordering Width = The Daylight Opening Width (The clear distance between the guides)
Ordering Height = The Guide Height (The distance from the floor to the underside of the endplate)
1. Understanding Widths and Side Room
While the Ordering Width is measured between the guides, you must ensure you have sufficient side room for the operation mechanism at high level. The overall width at the top of the door (where the endplates and motor are fitted) will be wider than the guide width.
- Endplate Width: The mechanism extends past the guides on both sides.
- Motor Arrangement: The total width depends on whether you choose an Inboard or Outboard motor setup.
- Drive Side Clearance: An outboard electric motor requires significantly more side room than the non-motor side. This varies depending on whether a chain drive or direct drive motor is specified.
- Manual Override: The emergency manual override is standardly located on the same side as the motor, accessed directly underneath the endplate. (Alternative positions available on request).
2. Headroom and Endplates
The size of the endplates (and therefore the headroom required) is not fixed; it varies depending on the specific door model and the total height of the door. Taller doors require a larger roll of curtain, which necessitates larger endplates.
Installation Methods
Traditional build roller shutter doors use steel guides and angle profiles. These can be specified to suit different fixing locations.
Face Fit - Behind the Opening (Recommended)
This is the standard installation method for traditional industrial doors. The guides are fixed to the inside face of the wall.
- Sizing: In a perfect scenario, your Daylight Opening dimensions equal your Ordering Width (between guides) and Ordering Height (under endplate).
- Hangdown Warning: Please be aware that ALL roller shutters have a degree of 'hangdown' (the bottom slat remains visible in the opening) even when fully open. This makes the final drive-through height slightly lower than the Guide Height.
- Critical Heights: If your drive-through height is critical, please speak to us first so we can advise on the best Ordering Height to ensure full clearance.
Reveal Fit - Between the Opening
It is possible to install these doors between the structural opening (within the reveal), although this is generally better suited to tube motor doors where components are contained within the barrel.
- Challenges: Industrial motor-driven models have bulky motors and components at the ends. To fit these between an opening, additional steel work/angles are usually required to create a sub-frame.
- Width Reduction: Installing between the opening will significantly reduce your drive-through width due to the guides and motor mechanism taking up space within the aperture.
Traditional Build Industrial Motor Driven Arrangement and Ordering Dimensions
(showing outboard direct drive motor arrangement)


