The o h cowl is the recommend cowl for blow backs in a fire place.
H style chimney cowl.
Height post install 270mm.
It is an age old method to regulate draft in situations where prevailing winds or turbulence cause downdraft and backpuffing.
Stainless steel finish.
Up to the 2015 winter season the h cowl was only available in a terracotta colour finish but it is now available in four different colours.
It has a distinctive advantage over most other downdraft caps because it stabilizes the draft rather than increases it allowing the fireplace to operate more efficiently.
O h cowl for chimney clay pots.
Although the h cap has a distinctive advantage over most other downdraft caps it fell out of favor because of its bulky looks.
This causes the wind to flow around the cowl which actually causes an increase in chimney draft.
A h style cap cowl is a chimney top constructed from chimney pipes shaped like the letter h.
Made from chimney pipes shaped like the letter h it isolates combustion gases from the winds and.
Stainless steel rotating chimney cowl.
Normally caused by low chimney stacks and obstructions that can be around the chimney pot and is mostly noticeable when winds are blowing in a certain direction.
This cowl is strap fitted and hand made from 316 stainless steel and is suitable for.
Chimney h cowl colours.
This cowl is manufactured in stainless steel grade 316 and is suitable for 200mm diameter pipes and ducts.
Depth it goes into chimney pot 230mm.
Height standing pre install 500mm.