Duplex 737 Anti-Downdraught Cowl

Everything in this range shares one diameter set, so Duplex 737 mixes with the rest of it without adapters.

Every run needs one cleaning point per bend — plan for it now, because a sweep will insist on it later.

The steel is stainless steel: it lives with condensate and salt air without pitting, which mild steel does not. Nothing in it is glued: the parts that face the fire come out with a screwdriver.

Specification

• Type: Anti-Downdraught Cowl
• Material: Stainless Steel
• Dimensions: 150–200 mm
• Diameter: turns downdraught into draw
• Weight: 3.24 kg

Care

Sweep once a season and check the clamp bands after the first winter — steel moves and bands loosen.