The closer comes complete with its own fixing pack , 51A4 standard pivot and comprehensive fixing instructions. Various arms and spindle lengths are available on request.
Dimensions
293mm x 90mm
Concealed Thickness
37mm
Standard Spindle Length
12mm
Also available in 17, 22 and 28mm
Maximum Door Width
Light spring - under 750mm (size 1)
Medium spring - 751mm to 950mm (size 2)
Heavy spring - 951mm to 1150mm (size 3)
Maximum Door Weight
100kg - standard pivot
120kg - heavy duty pivot
Maximum Door Height
2540mm
Closing Speed Dual
Initial closing speed is factory preset.
Final closing speed is full adjustable after installation.
Lubrication
Stable hydraulic fluid suitable for most climatic conditions and constant lubrication
Function
Built in positive back stop and optional 90˚ hold open position
Adjustable spring strength
Variable Power
Enables the closer to suit each opening, meaning the door closes correctly while keeping the opening force down to a minimum.
Side Loading Option (includes 51A2 Arm, 51A4 Pivot & fixings)
| Code | Description |
| DDA-NHO-T1-U | DDA compliant - no hold open |
| 510100T1-U | Light duty (size 1) - no hold open |
| 510200T1-U | Medium duty (size 2) - no hold open |
| 510300T1-U | Heavy duty (size 3) - no hold open |
| 510900T1-U | Variable strength - no hold open |
| DDA-HO-T1-U | DDA compliant - 90o hold open |
| 510190T1-U | Light duty (size 1) - 90o hold open |
| 510290T1-U | Medium duty (size 2) - 90o hold open |
| 510390T1-U | Heavy duty (size 3) - 90o hold open |
| 510990T1-U | Variable strength - 90o hold open** - See note |
| 510400D-T1-U | Dummy closer |
End Loading Option (Includes 51A3 Arm, 51A4 Pivot & fixings)
| Code | Description |
| DDA-NHO-T2-U | DDA compliant - no hold open |
| 510100T2-U | Light duty (size 1) - no hold open |
| 510200T2-U | Medium duty (size 2) - no hold open |
| 510300T2-U | Heavy duty (size 3) - no hold open |
| 510900T2-U | Variable strength - no hold open |
| DDA-HO-T2-U | DDA compliant - 90o hold open |
| 510190T2-U | Light duty (size 1) - 90o hold open |
| 510290T2-U | Medium duty (size 2) - 90o hold open |
| 510390T2-U | Heavy duty (size 3) - 90o hold open |
| 510990T2-U | Variable strength - 90o hold open** - See note |
| 510400DT2-U | Dummy closer |
Short Side Loading Option (Includes 51A1 Arm, 51A4 Pivot & fixings)
| Code | Description |
| DDA-NHO-T3-U | DDA compliant - no hold open |
| 510100T3-U | Light duty (size 1) - no hold open |
| 510200T3-U | Medium duty (size 2) - no hold open |
| 510300T3-U | Heavy duty (size 3) - no hold open |
| 510900T3-U | Variable strength - no hold open |
| DDA-HO-T3-U | DDA compliant - no hold open |
| 510190T3-U | Light duty (size 1) - 90o hold open |
| 510290T3-U | Medium duty (size 2) - 90o hold open |
| 510390T13-U | Heavy duty (size 3) - 90o hold open |
| 510990T3-U | Variable strength - 90o hold open** - See note |
| 510400DT3-U | Dummy closer |
Accessories
| Code | Description |
| 51A1 | Special top arm assembly - short side load |
| 51A2 | Side load top arm assembly |
| 51A3 | End load top assembly - use for round nose stiles |
| 51A4 | Standard bottom pivot assembly |
| 51A5 | 'F' bracket, closing jamb/header bar bracket including fixings |
| 51A10 | Heavy duty bottom pivot assembly - maximum weight 120kg |
| FIX-DUMMY | 'F' bracket kit standard |
| ALPBADGE | Alpro name badge |
Notes
- **Variable: If replacing a standard closer with variable strength the bracket highlighted in blue on the Closer Preparation Details diagram will need to
be changed. This is supplied with the variable strength closer.
- Trade pack quantity for all closer types is 4
- For 17mm extended spindle change code to X-U i.e. 510190T1X-U
- For 22mm extended spindle change code to X-U-22 i.e. 510190T1X-U-22
- For 28mm extended spindle change code to X-U-28 i.e. 510190T1X-U-28
FAQs
Is there a charge for delivery?
Carriage and packing are included in orders over £250.00. A charge of £10.00 is made on lower value orders to cover carriage, packing and insurance. For deliveries to Ireland please speak to the office for pricing.
What do the transom closers come complete with?
Complete fixing kit, bottom pivot assembly and top arm and channel.
What is the maximum weight the 51A10 heavy duty pivot assembly will take?
Up to a maximum weight of 120kg
Do you have any information on CE Marking or CE Marking of Doorsets?
Please refer to our technical section under Standards.
Where can concealed door closers be used? Are they just for residential projects?
Although concealed door closers are often used on domestic doors on flats and apartment main entrance doors, they are also regularly used in commercial settings. A concealed door closer can be used on any door with a light to medium traffic flow. If you’re unsure please contact our sales office on 01202 676262 but generally they can be used in many of the applications where overhead door closers are used.
Can concealed door closers be used on fire doors?
Concealed door closers can be fitted on 30 and 60 minute fire rated doors but the closer
should be CE marked (where applicable) and fire tested in accordance with BS EN1634-1:2000 and BS EN1634-1:1999. However they must conform to the fire test evidence for the door they are fitted on.
What size door closer to use?
Just like overhead door closers, the size you need depends on the size and weight of the door and where it will be installed – wind force and fire rating may need to be taken into account. Bearing in mind the age and ability of the users, it is important for the door closer to be “suitable and sufficient” for practical everyday use. Fire safety is vital but user safety is very important. If you need any advance on this please do not hesitate to contact our sales office.
How reliable are concealed closers and how do I maintain them once they’re fitted?
Most door closers are all tested to half a million cycles on specially designed test rigs so we are confident in their reliability and we offer a 3 year guarantee.
Concealed door closers require little or no maintenance. Because they are concealed in the door leaf, they are less likely to be damaged, vandalised or stolen so are more likely to give years of trouble free operation than their overhead counterparts.
Why should I choose a concealed door closer above an overhead version?
As a concealed door closer is hidden from sight it looks better! It is reliable and less prone to damage than overheads door closers and concealed door closers are virtually maintenance-free. A quality concealed door closer is extremely competitive against its overhead equivalent.
If I use a concealed door closer does that mean I can't use other hardware on the hinge edge of the door?
It is still possible to use other hardware such as hinges and finger guards even with a concealed door closer in place.