560mm Metal Storm/Weathering Collar manufactured to DW144
560mm Metal Storm/Weathering Collar or cravat manufactured to DW144 siral ductwork specification. Storm/Weathering spiral duct Collar. No fixings supplied.
Note 1: a Storm/Weathering collar is Used to wrap around the spiral ducting at roof level to stop water from entering the building. Manufactured to DW144 circular ductwork specification and delivered as one piece.
Note 2: To ensure that the building is water tight a bead of silicone should be applied between the spiral metal duct and the storm collar to make a seal. Sealants can be purchased from our fixings/sealants section.
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