Gibraltar Building Products Step Flashing, 25 Pack, 3.5 in x 7 in, Silver Galvanized Steel Under Floor Heating DCB118: fan assisted cooling of nonshrinking cement grout Frequently DCB118: fan assisted cooling of batteries results in faster charge cycle time and reduces downtime in the field ) Application Season multi season Container Size 45 pound Coverage Area 15000 square foot Grass Type all grasses OMRI Certified no Organic no Packaging Type bagged Product Form granules Suitable for Vegetables no Water Soluble no Fertilizer Analysis (N P K) 13 0 3 Phosphorus Free yes Application Conditions dry Iron Included no Pre Post Emergent post emergent Primary Usage insect control Size of Lawn large (10000 sq ft+) Q: Where should step flashing be used Q: What material and gauge is it made from