Door handle Boston
ER58QM 0S 84

Mission Invisible. Minimalist - designs reduced to the essentials is the main characteristic of modern, purist interior design. KARCHER DESIGN has dedicated their mission to this style, and developed a new concept in which the door handle and rosette appear to be almost invisible: "The Mission Invisible”. The result is a mini rose with a diameter of just 30 mm and a thickness of 2 mm. The rosette disappears almost completely behind the door handle and reduces the door fitting to a minimum. A total of six matching door handle models are available in classic matt stainless steel, the multi-award-winning trend colour Cosmos Black and the contrasting new colour Polaris White. In homage to the very popular door handle model Seattle ER46Q, the door handle Boston ER58 was developed. Here too, straight shapes speak for modern simplicity, which is fully exploited in combination with the mini-rosette. Compared to the Seattle door handle model, the handle of the Boston model is flatter in design. The handle neck also widens vertically towards the door to reduce the visibility of the mini-rosette to a minimum. To make the door fittings appear even more unnoticeable in the ambience of the room, KARCHER DESIGN developed the colour Polaris white, especially for white doors. The white colour blends seamlessly into the background of a white door, making the door fitting invisible. In order to make the mini-rose as minimalist as possible from a technical point of view, the rosette is not screwed on. The mini-rose is simply pressed into the door. The small serrations anchor the rose firmly in the door leaf. This innovative mounting technique does not require additional drilling in the door leaf and is particularly durable. The door handles are fixed to the spindle by means of the grub screw. On request, the mini-rose can also be combined with other models in the KARCHER DESIGN range. With the help of the aforementioned elements, KARCHER DESIGN has fulfilled its mission. The 30 mm small mini-rose disappears behind the door handle, innovative designs make the new door handles unnoticeable and the new colour Polaris white creates perfect uniformity with the doors. Combined together, the ideal solution is a success for the "Mission Invisible".
Material stainless steel
Designer Studio Karcher
Award Muuuz 2021, Callwey 2021, Architizer A+Product Award 2023

Technical data

Article No ER58QM 0S 84
Color polaris white
Material stainless steel
Shape square
Function without escutcheon
Handle length 130 mm
Height 30 mm
Width 30 mm
Thickness 2 mm
Handle dimensions 12 x 17 mm
Construction mini rose
Designer Studio Karcher
Award Muuuz 2021, Callwey 2021, Architizer A+Product Award 2023

Expert data

Article No ER58QM 0S 84
Square pin eccentric 8x8 mm
Min door thickness 35 mm
Max door thickness 55 mm
Screwing Diameter 25 mm
Assembly Speed standard
Rose type angular

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DESIGNS OF STAINLESS STEEL

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Karcher GmbH Design-Beschläge

Raiffeisenstraße 32
D-74906 Bad Rappenau

Tel: +49 7264-9164-0

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