Wall duct assembly

Details Wall duct assembly Wall duct assembly

A - Human Necessities

47

G

189/18

A47G 21/18 (2006.01) F16L 5/02 (2006.01) H02G 3/22 (2006.01)

Patent

CA 1041028

ABSTRACT OF THE DISCLOSURE A wall duct assembly is disclosed comprising a duct piece or unit having arranged of its outside diameter retaining grooves for sealing structures. The sealing structures can be adjusted through the aid of pressure rings to provide effective sealing of the duct unit in walls or the like structures.

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