Direct Vent Neck Adaptor: 450 x 450 (450° DIA)DVNA4545
GAS COWL - GALVANISED: 7" (178mm)GC7
Direct Vent Neck Adaptor: 450 x 450 (400° DIA)DVNA4540
Direct Vent Neck Adaptor: 350 x 350 (400° DIA)DVNA3540
GAS COWL - GALVANISED: 4" (102mm)GC4
Direct Vent Neck Adaptor: 450 x 450 (500° DIA)DVNA4550
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