The Professional Airtightness Membrane Foil Applicator Gun is designed for use with Passive Purple foil tube packs on construction sites. The enclosed aluminium barrel is ideal for use on window formers, mechanical fixing insulation penetrations, service penetrations, joist ends, and many other hard-to-reach locations on building sites. The Airtightness Membrane Foil Applicator Gun is a high-quality, affordable barrel gun that can be used for our 600ml Passive Purple foil sausages cartridges.