These peel-n-stick vents are available individually or by the case of 100. These are used in shrink wrap projects when you are planning on leaving the shrink wrap installed for a long period of time like months or longer. If there is moisture trapped in that environment and the area is finished and needs to stay clean it may collect mold or mildew. One such environment in under a boat or marine equipment, or other shrink wrapped items. we recommend placing a vent every couple feet down the length of the unit if it will be used for outdoor storage where there will be a variation of weather conditions. If you are using heat shrink wrap for storage and it will be unwrapped quickly you do not necessarily need these. We also sell vapor corrosion inhibitors to keep corrosion off your surfaces.
