GDO Classic Standard Vertical Rib Special Offer Up and Over garage door Steel GDO

GDO Classic Standard Vertical Rib Steel Up and Over Garage Door

The GDO Classic Standard Vertical Rib is the definitive British steel up and over garage door. The close spaced vertical rib profile is a familiar architectural feature across decades of UK residential building, making it the ideal choice for straightforward replacements or matching existing detached garages. If you want a dependable, classic door that looks right at home without drawing unnecessary attention, this narrow ribbed profile delivers a tidy, uniform finish that stands the test of time.

Beyond its traditional appearance, the narrow vertical pressing provides exceptional functional benefits. Each tight vertical flute acts as an integrated structural fold, giving the galvanised sheet steel high rigidity and eliminating panel flex. Vertically oriented ribs also shed driving rainwater, dirt, and road salt naturally off the lower threshold, preventing dirty water lines from settling across the panel face. Finished with an electrostatic polyester powder coating on both sides, it will never rot, peel, or twist like timber.

Pre Fitted 50mm Steel Sub Frame Included

Every GDO Classic door arrives pre-framed as a complete unit as standard. The 50mm steel box-section sub frame is fitted directly to the door leaf and operating gear at the factory:

• Factory Pre Assembled Alignment: The side tracks, pivot arms, and counterbalance spring assemblies are pre-mounted and balanced to the steel frame at the factory. This cuts installation time in half, eliminates the need to build up gearing on site, and guarantees true square alignment straight off the lorry.
• No Timber to Rot: Modern galvanised steel eliminates traditional timber goalpost frames that draw damp from ground level, twist out of square, and demand regular repainting.
• Seamless Colour Coordination: The steel sub frame is powdercoated in the exact same colour as the door leaf, creating a neat, matching picture-frame border around your opening.

Crucial Measuring and Sizing Information

All GDO up and over doors are ordered by their Overall Width and Overall Height, which includes the 50mm factory steel sub frame. Choosing your size depends on whether you install within or behind the aperture:

• 8 Standard UK Widths Across 2 Heights: Available in 6ft 6in, 6ft 10in, 7ft 0in, 7ft 1in, 7ft 3in, 7ft 5in, 7ft 6in, and 8ft 0in nominal widths, paired with 6ft 6in (2031mm overall) or 7ft 0in (2184mm overall) height options.
• Fitting Behind the Opening (Internal Face Fit): Fixes flat to the rear face of the brick piers, keeping your full structural opening clear for maximum drive-through width. Make sure you have at least 50mm of flat pier face on each side and 50mm lintel headroom inside. Important check: Ensure the internal daylight opening of the door frame (the space the door panel swings through) is smaller than the brick opening so the moving panel clears the masonry cleanly without catching.
• Fitting Between the Opening (Between Fit): The frame fits directly between the brick jambs. Your brickwork opening must be slightly larger than the overall frame width and height to allow for installation clearance (we recommend allowing roughly 10mm on the overall width and 5mm on the overall height).

Operating Mechanism: Canopy vs Retractable

Match your operating gear to your garage layout and daily use:

• Canopy Operating Gear: Operated by an overhead torsion spring mounted across the head of the frame with high-tensile cables and steel rollers running in vertical side tracks. When open, approximately one third of the door panel protrudes outward to create a canopy. Because there are no tracks running back into the garage, canopy gear leaves your entire ceiling space completely clear for overhead shelving, ladders, or roof boxes. Engineered primarily for light, balanced manual hand operation.
• Retractable Operating Gear: Uses heavy-duty side-mounted tension springs and horizontal ceiling-level tracks that project back into the garage. The entire door panel glides smoothly inside the building when open, leaving no panel protruding outside. Retractable gear is the required choice if you plan to add a remote-controlled electric boom operator, and it delivers effortless manual travel.

32 Durable Factory Powder-Coated Colours

While standard merchant doors often restrict you to basic white, the GDO Classic is available in an extensive palette of 32 factory-applied, low-gloss powder-coat finishes across both the panel and the 50mm frame:

Popular Architectural Colours:
Traffic White (RAL 9016)
Jet Black (RAL 9005)
Anthracite Grey (RAL 7016)

Contemporary Greys:
Light Grey (RAL 7035)
Window Grey (RAL 7040)
Traffic Grey (RAL 7042)
Slate Grey (RAL 7015)
Graphite Grey (RAL 7024)
Iron Grey (RAL 7011)
Basalt Grey (RAL 7012)
Pebble Grey (RAL 7032)
Dusty Grey (RAL 7037)
Signal Grey (RAL 7004)
Agate Grey (RAL 7038)
Black Grey (RAL 7021)

Greens and Blues:
Chartwell Green (BS 14 C 35)
Moss Green (RAL 6005)
Fir Green (RAL 6009)
Steel Blue (RAL 5011)
Signal Blue (RAL 5005)
Gentian Blue (RAL 5010)
Cobalt Blue (RAL 5013)
Light Blue (RAL 5012)
Sky Blue (RAL 5015)

Reds, Creams and Earthy Tones:
Ruby Red (RAL 3003)
Traffic Red (RAL 3020)
Traffic Yellow (RAL 1023)
Light Ivory (RAL 1015)
Cream (RAL 9001)
Clay Brown (RAL 8003)
Chocolate Brown (RAL 8017)
Mahogany Brown (RAL 8016)

Fittings, Mechanical Locking & Security

• Two Point Slam Latching: Fitted with an ergonomic black exterior handle and interior turn disc operating solid mechanical slam action latches that bite into the steel frame legs. 4 point locking is also available 
• Euro Profile Cylinder: Supplied with a standard euro-cylinder lock and 2 keys. Can be keyed alike to matching GDO side personnel doors on request.
• Electric Automation Ready: Retractable models link directly to any good quality ceiling-mounted boom operator (such as the GDO 800XL or Hormann ProMatic/SupraMatic). An optional de-latch kit can be added to retain mechanical lower frame locking alongside the motor boom lock.

GDO Steel Up and Over Size Conversion Chart (Canopy or Retractable)

Use the conversion table below to match your imperial order reference to the exact overall frame dimensions (including the 50mm steel sub frame). Both canopy and retractable operating mechanisms share the exact same overall dimensions.

These GDO special offer up and over doors are white, black or anthracite grey finish in standard sizes only with 29 optional colours to choose from at a small additional charge. You choose canopy or retractable operating gear when you start the order process. 

Canopy or Retractable Gear

The first decision is whether you want canopy or retractable operating gear. Canopy gear uses a preassembled torsion spring above the door panel with cables either side to lift the door, and when it is fully open about a third of the panel projects out of the front of the garage, which is where the “canopy” name comes from.

Retractable operating gear uses lifting arms either side with springs and horizontal tracks inside the garage, so the door swings out a little further on the way up but then retracts fully back into the garage on the tracks. This makes retractable gear the better option if you know you want to add an electric operator, assuming you have enough headroom and length inside the garage for the boom.

Canopy mechanism with steel frame

Retractable mechanism with steel frame

Handle Options

You can choose a standard black handle with euro profile cylinder locking, or no handle and no handle hole drilled at all. No handle is usually chosen when the door is going to be used with an electric operator so you are not left with an unused external handle and keyhole.

Most other up and over door ranges come pre-drilled for a handle as standard, so being able to order the panel undrilled is a useful option when you are planning automation.

Factory Fitted Steel Sub Frame

Door type and operation

• Type: Single skin steel up and over garage door with canopy or retractable lifting gear.
• Operation: Manual as standard, with retractable gear the better choice if you plan to add an electric operator.
• Sizes: Standard sizes only, no made to measure on this range.

Construction and finish

• Construction: Galvanised steel door leaf with pressed ribs, folded edges and internal bracing for strength.
• Finish: Factory finished with a choice of 32 colour options - 3 standard colours at no charge.

Steel sub frame

• Supplied pre framed as standard ready for the easiest and simplest on site installation.

Operating gear options

• Canopy – Overhead torsion spring and cables, with about one third of the door projecting out when open. No internal tracking and full drive through width acheived when opened.
• Retractable – Side arms and horizontal tracks, the door retracts fully into the garage and is well suited to electric operators. Slight loss of width when opened with the side rams sitting within the opening.

Locking

• 2 point internal locking as standard.
• 4 point internal locking upgrade, using cables from the internal handle to operate extra locking points (no exposed locking rods).

Handle options

• Standard black external handle with euro cylinder for manual use.
• Or supplied without handle and without handle hole for electric operation.

Installation

• A level floor and square, plumb opening are important for the best results and smooth door operation.

Installation guidance

• These doors should be fixed to a sound, square and level opening, whether you are using the factory-fitted steel frame or your own timber frame.
• Always check the floor is level where the frame legs sit; any fall in the floor will affect how well the door closes and seals.
• Allow a small amount of fitting tolerance around the overall frame size to pack, plumb and level the frame properly before final fixing.
• The door and frame arrive pre-assembled. Offer the frame into the opening, wedge and support it, then check with a spirit level on the head and both legs before drilling and fixing.
• Fixings should be suitable for the wall type (for example, concrete screws, frame fixings or sleeve anchors into brick or block). Use several fixings down each leg of the frame rather than relying on just a couple near the top.
• With a timber sub frame, make sure the timber is straight, treated and securely fixed to the structure before you hang the door to it. The door gear then fixes back to the timber uprights and head.

Space and clearance

• Check you have enough headroom inside the garage for the chosen gear: canopy needs space above the opening for the spring shaft, and retractable needs extra headroom and depth for the horizontal tracks and any electric operator boom.
• Make sure there is enough clear space in front of the garage for the door to swing out fully during operation, especially with retractable gear which swings out a little further on the way up.

General advice

• Two people are strongly recommended for handling and positioning the door and frame safely.
• After fixing, check the door runs freely, latches securely and sits evenly against the frame; adjust as needed before fully tightening all fixings.
• Basic maintenance such as light oil on pivots, rollers and moving parts will help the door run smoothly and extend the life of the operating gear.
  Delivery Guidance
  

Warranty information

These steel up and over doors are covered by a manufacturer’s warranty, provided they are installed and used in normal domestic conditions.

1. Warranty period

• Garage door, frame and mechanism: 10 year warranty covering the safe and reliable operation of the garage door from the date of purchase, for the original purchaser.
• Springs, tracks, rollers and hinges: 2 year warranty for normal domestic use (no more than 5 open/close operations per day). We recommend they are inspected annually by a competent engineer.
• Replacement parts: 6 month warranty on replacement parts, or the remainder of the original warranty period if longer.
• Paint finish: Factory-applied finish covered against rust-through and loss of adhesion for the stated warranty period, assuming the surface is kept clean and is not damaged by impact or harsh chemicals.

2. Requirements

• Warranty is only valid in the country where the garage door was purchased.
• The product must have been purchased through an authorised partner and supported by a valid receipt and product identification (such as barcode/serial label).
• The warranty covers the garage door, frame and operating mechanism only, and does not extend to any surrounding building work or consequential damage.

3. Performance

• During the warranty period, defects which can be shown to be due to material or manufacturing faults will be rectified. At the manufacturer’s discretion this may be by repair, exchange of parts, supply of a replacement door, or a reasonable reduction in price.
• The warranty does not cover any costs for removal, refitting, installation labour or delivery/attendance charges.

4. Exclusions

• Improper transport, storage or fitting.
• Repairs or adjustments carried out by non-qualified or non-competent individuals.
• External influences such as fire, water ingress, alkaline solutions, acids, salt, bird droppings or abnormal atmospheric or industrial pollution.
• Use of non-approved parts or accessories without the manufacturer’s agreement.
• General wear and tear, lack of reasonable maintenance and any damage caused by impact or misuse.

Full warranty terms, including any updates or model-specific details, are supplied with the product documentation and are available on request.

Click here to view this door's product guarantee.

Measurements and Ordering Sizes for GDO Steel Up and Over Garage Doors

Conversion table below to show most common standard UK up and over garage door size references and the equivalent GDO Up and Over ordering sizes for the door and steel sub frame overall dimensions in metric (Canopy or Retractable Gear).
If you have an existing up and over garage door there could well be a label on the side or inside face which gives you the original ordering reference which will usualy be in imperial sizing if the door was a standard size.
The ordering sizes for the GDO up and over doors refer to the overall door and steel sub frame width, see 3D image lower down.