Device duct external corner 90°, single-section, symmetrical, with two continuous mounting profiles in the back section and continuous perforation in the duct back, including two duct couplings KUV, butt connectors BSV65/170 for exact connection to the duct base please order separately.certified! Dimensions (approx. dimensions) H x D: 173 x 66 mm Lid opening: 80 mm Outside leg length: 198 mm for device duct base: BU651708... Material: PVC-hard (polyvinyl chloride) Color: cream white RAL: 9001 (similar)