For more convenience in the garden! + Lighting, pool, garden sauna, the wall box for the electric car and many other applications: All projects can be put into place with the KRASO Builder’s Convenience Box - wall - garden without any issues! + For core hole DN 200 (199-203 mm). One for all: precast walls, in-situ concrete walls, casings and core holes! + Tight in waterproof concrete structures in stress class 1 (standing or occasionally pressing water). + Radon-tight! Resistant to methane gas! + Torque Control Nut KRASO DKM: integrated torque limiter - no torque wrench required! + Split end plugs for easy installation! + Ready for the network connection of water, electricity and network lines:Checked in accordance with DVGW! Includes KRASO BKP - Sealing Insert for elecricity/water (2 x), telecommunication, electricity + telecommunicaton. + Optional available external sealing element with sealing flange accordinng to DIN 18533! Seal width: 80 mm. + DafStB waterproof concrete guideline: Stress class 1 + 2, with optional external sealing element DIN 18533 W1.1 -E and W2.1 -E.