The “Chinese” cowl protects against rain. It is only recommended for heaters that have a forced exhaust outlet, such as boilers with pellets, gas-propane, and oil as well.
“Barrel” is a simple windproof cowl with increased protection from rain. Recommended for areas with low airspeed. Recommended for fireplaces and stoves
The classic windproof cowl has the primary purpose of preventing a possible draft of a wind blow in our chimney. Preferable to areas that are often affected by moderate winds. It also provides complete protection against rainfall in the chimney. Recommended for fireplaces and stoves.