Static cowl with cover 9D – 15 x 15 cm
Static cowl with cover type 9D in concrete for a 15 x 15 cm flue in the corner of a flue block, two adjacent straight sides, external size of 30 x 30 cm. Two sides that meet are vertical, so the cowl fits in the corner of the flue block. The other two sides are chamfered and deflect rain and wind.
At the top a closed cover fully shields the flue outlet from rain. Below it, 3 or 4 profiled rings keep the draught stable in any wind direction. There are no moving parts, no maintenance and no power supply. The concrete is natural grey.
- Flue size (internal): 15 x 15 cm
- External size: 30 x 30 cm
- Type 9D, item 134543
- Configuration: 2 adjacent straight sides, 2 chamfered sides
- Build-up: 3 or 4 rings with closed cover
Each flue gets its own cowl. Stack the rings dry and staggered on a clean, flat chimney top, so that the cover sits level.
Why is the external size only 30 x 30 cm? Because two sides are straight. On those sides the cowl is narrower than a version with chamfered sides.
When do I choose a cover rather than an open crown? When the flue outlet must be fully shielded from rain. For the open crown with bird mesh and deflector, see the Superior static cowl.
What is a bemal? A Flemish name for a static cowl, like bemalkap and tiratrek. It is also called an anti-downdraught cowl or chimney cowl.