Previous Image
Next Image
Knapp Duo 30 Frame Connectors
Hover over image to zoom

Knapp Duo 30 Frame Connectors

  • Offers Available
  • Free UK Delivery when you spend £75.00
From £66.67
You Save: £3.99 (6%)
( £80.00 inc. VAT)
In Stock  |  For Next Day Delivery
Add to Bag
This product has been added to your basket...
  • Continue Shopping
  • Checkout

Duo is a stable, compact connector for solid timber pieces, e.g. furniture, stairs and interior fittings. Timber pieces can be connected together easily using the Duo-system, and just as easily taken apart again. The system can be used by the wood furniture industry, staircase manufacturers, in interior construction and allows natural expansion/contraction of wood.

Timber size recommendations and screw requirements for Duo-system

Sizes available:

 Duo 26/26
 Duo 46/15
 Duo 62/15
Duo 100/15
Duo 46/30
Duo 62/30
Load values in the insertion direction (shear force)
F0 0,86 kN* DUO 46/15 F0 2,00 kN* DUO 100/15
F0 0,97 kN* DUO 26/26 F0 2,15 kN* DUO 62/30
F0 1,29 kN* DUO 62/15 F0 2,37 kN* DUO 90/20
F0 1,30 kN* DUO 46/30 F0 4,35 kN* DUO 90/46
* The load value refers to the transverse force in the insertion direction.
Details of the stress values are of the certificate of Holzforschung Austria from 02.11.2000 and the current KNAPP catalogs.
In DUO systems are commercially CS-screws (5x40, 5x60, 6x40, 6x60 mm) according to Ö-Norm M5027 should be used.

Mounting: By screwing with CS-screws Ø 5 mm or Ø 6 mm (Length as required) and PH-screws Ø 5 mm or Ø 6 mm
Advantages:  Concealed, self locking, by adjustable screw connector, for frame connections
Installation:  With CNC-Machine, Long hole drilling machine, Hand router
Suitable materials:  All solid and plywood materials from 21 mm
Application: Frame connections for furniture, stairs and Stand construction to Interior design

 Duo installation using optional router jig KFD 470 (see related products).      
Not rated yet
Be the first to review Knapp Duo 30 Frame Connectors. Write a review ›

Payment Methods

We accept payment by major credit cards, charge cards or debit cards including:



Maestro Credit & Debit Cards


Please note we do not accept the following payment methods; American Express, Payment on delivery, Email instalments, Cheque, Bank transfer or Postal Orders. Payment is only debited from your card at time of dispatch.


Website Security

Shopping is secure on www.questhardware.co.uk. We utilise industry-standard secure sockets layer (SSL) technology to allow for the encryption of potentially sensitive information such as your name, address and other critically sensitive information like your credit card details. Information passed between your computer and our website cannot be read in the event someone else intercepts it. This technology includes the following features:

Authentication - this assures your browser that your data is being sent to the correct computer server, and that the server is secure.

Encryption - this encodes the data, so that it cannot be read by anyone other than the secure server.

Data integrity - this checks the data being transferred to ensure it has not been altered.


Storing your Card Details

Store your credit card for an easy and quicker shopping experience. Your card details will be stored in your account so once you have saved cards; you can access them in the My Account area. The full card number will never be displayed, only the final 4 digits that enables you to select the correct one for your purchase. The correct billing address will need to be selected for all stored credit cards. Please amend the saved billing address in the case of change of address.

Please contact us for our Delivery & Returns Policy on this product.

We endeavour to despatch your order for delivery for the next working day as standard - please let us know if you would like a weekend or special delivery.

Quest operates its own van fleet which delivers Monday to Friday to selected locations providing a friendly and reliable service. We also use trusted national carriers for UK destinations further afield.

Customers may also order and collect from us. Our Trade Counters and Customer Collection points are open from 7:00am - 4:45pm Monday to Friday.  Please call 01280 822062 to confirm your order is ready for collection. 

Cost Of Delivery

Delivery is charged at £6.00 ex VAT but is FREE on orders over £75.00 excluding VAT.  Timed delivery options are available please contact us for more details and rates if not listed.

For delivery to the Channel Islands, UK Isles, Scottish Highlands and Ireland a surcharge will apply. Please contact us before placing your order for a delivery quotation. 


Should you wish to return any items then please contact our team within 30 days of receipt of goods.  Please let us know the reason for return, and we will make arrangements for returning goods. Unless faulty, goods must be in original packaging and unused to qualify for returns. Faulty goods will be checked for misuse before replacing. Restocking charges may apply to some returns.

Email us sales@qs-sales.com or call 01280 822062.