Abstract: The use of the High Wind Bio-Mass Cap helps with the ventilation of corn or pellet stoves, inserts, or fireplaces in a high or low wind area. You attach a High Wind Bio-Mass Cap to the end of a pellet or corn vent pipe where it terminates at a manufactures specified location. You may attach this cap as low as 12? to the ground and it can face either horizontal or vertical. The cap increases the flow dynamic by creating a low pressure area at the exit of the vent pipe. By lowering the pressure at the end of the pellet or corn pipe it lowers the pressure on the ventilation motors of any of the units, which will possibly extend the life of the stove/units ventilation motor. Being only 12? from the ground and facing horizontal this is the only cap that will keep a breeze from creating a possible back draft.