we are a professional company handling in the natural slate, our product have comfirmed the BS680, EN12326 standard. Our Sizes: 600x450, 600x300, 500x250, 500x300 500x375, 400x300, 400x250, 400x200.Thickness: 5-7mm, 6-7mm, 6-8mmColor: Grey BlackPacking: In wooden cratesDelivery time: about 15-20days for 1x20'fcl"Minimum quantity order: One 1x20'fcl" Roofing slate
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