Poplar Long Plate Sprung Door Knob & Euro Lock - BronzeOur Poplar design is our take on the classic Victorian beehive knob. Weve streamlined things, giving it a flatter knob and, in this case, a low profile, long backplate thats designed for use with a Euro cylinder lock. Itll work well in period properties with a contemporary edge, or by bringing a traditional touch to new builds. The knob is sprung, which means you dont need to rely on the latchs spring for its movement. Weve opted for a light spring,