Genuine Napoleon 5″ inner / 8″ outer flexible direct-vent venting: GD420 and GD430 flex kits, GD422-1 and GD422R-2 wall terminals, ST58U-1 Silhouette terminal, GD410/411/412 roof terminal kits, firestops, couplers and sealant. Listed for Napoleon Vector, Luxuria, Tall Vector, Elevation X, Altitude X, Ascent X 42, Ascent Linear 56 and Ascent Multi-View fireplaces.
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