450mm Metal Storm/Weathering Collar manufactured to DW144
Metal Storm/Weathering Collar manufactured to DW144 specification. Storm/Weathering Collar. No fixings supplied. Note 1: a Storm/Weathering collar 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 duct and the collar to make a seal. Sealants can be purchased from our fixings/sealants section.
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