For most Australian homes, a 1.2m x 1.2m fire blanket is the best choice. It provides sufficient coverage for standard kitchen fires while remaining easy to handle and store. However, the ideal size depends on your specific environment—from compact 1.0m blankets for caravans to 1.8m commercial sizes for restaurants. Key takeaway: Always choose a blanket large enough to completely cover the fire source with overlap. A blanket can't be too big to extinguish a fire, but it can c