ALEX PLUS(R) Acrylic Latex Caulk Plus Silicone by DAP(R) is a professional quality caulking product formulated to last. It is an all-purpose adhesive caulk ideal for a wide variety of indoor and outdoor applications. ALEX PLUS(R) contains silicone, which allows for excellent adhesion and flexibility to resist expansion and contraction without cracking. It provides a waterproof seal and prevents air and moisture from passing through cracks and joints, thereby improving energy efficiency. Cured caulk is mildew resistant. ALEX PLUS(R) is paintable with latex and oil-based paints. It is easy to use, easy to tool, low in odour, cleans up easily with soap and water and has a low VOC content. This contractor pack contains 12 cartridges of 300 ml.