Height 6 cm, shaft external dimensions approx. 30 x 30 cm, opening dimensions approx. 24 x 24 cm, made of plastic-coated aluminum, color antique silver, with extendable support flange on two opposite sides, all-round slotted holes, removable, step-resistant cover made of galvanized and plastic-coated sheet steel with two finger holes into which the locking device can be installed if required, supply and install on the drainage elements above the roof drains.

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