E12 Economy Steel Door

Frame

The E12 uses our general purpose rebate frame for fitting between walls, into steelwork, masonry or timber. Butt hinges are fitted as standard. 

 

Thresholds

The threshold is designed as an integral part of the doorset, giving additional strength to the frame; aiding weatherproofing and sound reduction, and providing a stable surface for lower locking points.

For general purpose industrial buildings, construction is normally of galvanised steel. For offices, shops and public buildings, aluminium or stainless steel is used for the aesthetic qualities. For food preparation areas or wet situations, stainless steel has the necessary hygienic and corrosion resistance properties.

For very heavy use, we can fit additional internal reinforcing. For severe duty use, such as forklift traffic, solid stainless steel gives the ultimate in strength.

Where no threshold is required for a level access, the doorset will be delivered with a temporary threshold which is removed after installation.

We recommend that external doorsets with no threshold should be fitted with an automatic drop seal, to minimise water ingress, draughts and noise. Dropseals may be surface mounted or concealed within the door bottom.

Locking Systems

Specifying particular locks will change the operation of a doorset. Points to be considered are:

• Emergency requirements
• Frequency of use
• Security

We can advise on the correct locking equipment for a particular use, but in general:

• Personnel doors are fitted with a standard mortice lock.
• Escape doors to be used by members of the public need a full width panic bar.
• Escape doors to be used only by internal staff and not by members of the public, may be fitted with either a push pad or mortice escape lock. For frequent use as a personnel door, a mortice escape lock is the preferred option.
• Mortice locks
• Mortice locks fit inside the door, and are available with several different functions
• On a mortice escape lock, depressing the inside handle will override a locked cylinder or deadbolt. Standard locks and escape locks may be easily exchanged on site if escape functions are revised after installation.

Panic Bars and Push Pads

These units are surface mounted, have 1 to 3 locking points.

Cylinders

Europrofile lock cylinders are available in standard and drill-resistant, high security types. High security keys are not easily copied and can be useful to avoid unauthorised key duplication.
Various keying options are available - standard differ, keyed alike, master, suites etc.

 

Door Closers

Overhead closers are versatile and useful. All will close the door, to limit further access or maintain internal environments. Depending on the model chosen, they can also:

Control the opening and closing speed – useful in windy situations.
Restrict the door opening angle, to prevent damage to doors and the reveal corners.
Hold a door open - useful when carrying goods through.
Delay closing – helpful for parents with buggies or people with limited mobility.
Surface mounted closers are available in several finishes, to complement the chosen colour scheme.

Limit Stays

Adjustable telescopic limit stays are a budget alternative to closers. They can:

Restrict the door opening angle to prevent damage to doors and the reveal corners.
Be tightened to hold a door open.

Inward Opening Doors

Closers are usually mounted on the door leaf. On inward opening doors this can result in the closer body fouling the wall so you may need to allow extra clearance or a recess cut into the wall. 

Sizing

We produce both made to measure and standard sizes. When ordering, please note that it is customary to allow a fitting clearance of 0 – 8mm on the width and 5 – 10mm on the height of a doorset.

When fitting to steelwork or timber, we normally allow 5mm clearance on the width and 5mm on the height of a doorset. When fitting to masonry, we increase the clearances to 8mm on the width and 8mm on the height, to compensate for slight variations in the structural opening.

In general, clearances should be kept tight on the width for a neat appearance, but on the height, more clearance is advisable to allow for the arc of movement as the doorset pivots towards vertical during installation.

We always advise that actual structural openings are measured, if possible after the floor has been laid. Please do not assume that structural openings will be constructed exactly to the size shown on the architect’s drawings.

The maximum size of a single E12 is 980w x 2100h. The maximum size of a double E12 is 1800w x 2100h

Colours and Materials

Steel doors and frames are produced fully finished in leather grain plastisol or may be powder coated to any BS or RAL colour. Please be aware that some powders may be classed as special orders and therefore incur extra charges - please call us with your colour requirement and we will advise.

RAL Colours

BS 4800 Colours

Colours shown on your screen or printer may vary from actual product colours, which may also vary slightly between batches. If you would like to see an actual colour sample, please call us.

E12 Steel Doorset NBS Specifications

The E12, part of DoorTechnik's range of steel doors, is an economical general-purpose doorset, for most internal or external applications in commercial buildings.

We are always pleased to offer door specification advice. It is very important to us that our doorsets are correctly specified for their intended use so that they may give many years of trouble-free service. We believe in offering the best options for your project so that you get a product that is manufactured exactly to your needs.

Below are some example E12 specifications. Please feel free to edit them for use in your plans, tender documents or specifications. If you cannot see just what you want, then please contact us and we will be pleased to write specifications for you.

E12 steel doorset with mortice lock

From DoorTechnik, Moor Lane, Thorpe on the Hill, Lincoln, LN6 9BW. Tel 01522 693522.

Single doorset, 980w x 2100h, finished in .. plastisol
Single doorset, 980w x 2100h, polyester powder coated to BS...
Double doorset, 1800w x 2100h, polyester powder coated to RAL..
(Edit size and colour to your needs)

45mm door leaf, constructed of 1.2mm steel, with internal reinforcing and an insulated core. Overhanging flanges to all four edges for security and weatherproofing.
Frame construction of 1.2mm steel, with internal reinforcing and flexible weather seals. Heavy duty stainless steel butt hinges, with or without security pegs. 12 fixing points through jambs.
Mortice sash lock, with euro profile cylinder and standard black lever handles.

 

U Values

The U Values for the E12 steel door have been calculated to EN 673, EN ISO 10077-1 and EN ISO 10077-2. As standard, all E12 doorsets have an insulated core.

A standard 45mm E12 with foam core is 2.1 W/(m²K)

The rest of the range is between 2.1 W/(m²K) and 5.1 W/(m²K). Please contact us for more details.