ProBase Kit To suit 6ft x 4ft Sheds Purchased last year, never removed from box. Brand new A garden building base kit made from ProBase grids to form a firm, strong, long-lasting and well-drained foundation for a garden building. Grid Dimensions (Approx): 40mm x 500mm x 500mm Grid Weight: 1.3kg Material: High Quality Recycled Plastic with UV Protection. Kit Includes: Commercial Grade Weed resistant membrane sheet, cut to size Country of Origin: Manufactured in UK to ISO 9001 Certified: Independently tested and certified Guaranteed: 20 Years Number of Grids: 12 Each grid requires approximately 12kg of 10mm round pea gravel
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