180mm Metal Storm/Weathering Collar to DW144
180mm Metal Storm/Weathering Collar manufactured to DW144 specification. Storm/cravat/Weathering Collar for use with spiral ducting or circular. No fixings supplied.
Note 1: a Storm/Weathering collar or cravat is Used to wrap around the ducting at roof level to stop water from entering the building. Manufactured to DW144 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 siral circular duct and the weathering collar to make a seal and prevent weather ingress. Sealants can be purchased from our fixings/sealants section.
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