50 Assembly of ventilation ducts using Gebhardt joints Applying and cutting off sealing rubber • The sealing rubber band is placed so that it is flush inside the duct. • Do not pull on the sealing tape. • The sealing tape must overlap in the corners. • The sealing tape is cut flush with the side of the sectional frame. • Sealing tape sizes: 20P flange – 15 x 4 mm. 30P flange – 20 x 4 mm. 40P flange – 25 x 4 mm.
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