The DUO 30 / DUO 35 Sample Pack contains 8 pairs:
2 x DUO 30 oL
2 x DUO 30 mL
2 x DUO 35 oL
2 x DUO 35 mL
The DUO 30 and DUO 35 hook connectors come in 30 and 35 mm and consist of two identical round shaped steel brackets that hook into each other in a dovetail-like manner. They form a stable load-bearing connection immediately after screwing and hooking together the parts. They can be simply installed using the KNAPP® Forstner Bit with our custom adjustable depth gauge.
Because of the bracket’s round shape, it can be easily fitted into a ∅ 30 mm x 3 mm recess. Utilizing the DUO Center Punch you can mark the wall and/or counterpart at the exact spot where the connection is to be made.
DUO 30 = 30 mm in diamter. DUO 35 = 35 mm in diamter.
DUO mL = with sideways tolerance of 1/8+ (1,7 mm). DUO oL = without sideways tolerance
Steel – Zinc plated
DUO mL – Blue galvanized,
DUO oL – Yellow galvanized
Screw-in with CS-screws (DUO 30) Euro-Screw 6×10 mm (DUO 35)
Concealed, self-tightening, demountable connector
Using our KNAPP Forstner Bit with adjustable depth stop, drill a ø = 30 or 35 mm hole, 3 mm deep. Install with CS screws.
All woods and board materials
Wall panels, cabinet end panels, ceiling panels, handrails.
Doors and Windows
Stairway and Handrails