Vacu-Stack Chimney Cap is the solution
for wind induced downdrafting problems. Unique design increases draft in
proportion to wind speed, but will not cure otherwise poorly drawing flues.
Should only be used for wind related down drafting problems.
Wind driven, the slightest breeze provides positive ventilation
with no chance of down drafting. Available in 4 stock sizes. Galvanized
steel or stainless steel. Totally enclosed ball bearing requires no additional
maintenance. Should only be used for wind related down draft problems.
