This aquarium protection mat is designed for use when setting an aquarium on an aquarium stand. We strongly advise the use of Garden Mat with Cube Garden Aquarium tank. Please choose appropriate sizes for your aquarium. Specifications for 30x30cm Mat: Dimension: W30 x D30cm (approx: 12"x12") Thickness: 5mm (approx: 1/5") Specifications for 36x22cm Mat: Dimension: W36 x D22cm Thickness: 5mm (approx: 1/5") Specifications for 45x30cm Mat: Dimension: W45 x D30cm (approx: 18"x12") Thickness: 5mm (approx: 1/5") Specifications for 60x30cm Mat: Dimension: W60 x D30cm (approx: 24"x12") Thickness: 5mm (approx: 1/5") Specifications for 60x45cm Mat: Dimension: W60 x D45cm (approx: 24"x18") Thickness: 5mm (approx: 1/5") Specifications for 90x45cm Mat: Dimension: W90 x D45cm (approx: 36"x18") Thickness: 8mm (approx: 5/16") Specifications for 120x50cm Mat (to be discontinued): Dimension: W120x D50cm (approx: 48"x19.7") Thickness: 8mm (approx: 5/16") Specifications for 120x45cm Mat: Dimension: W120x D45cm (approx: 48"x18") Thickness: 8mm (approx: 5/16") Specifications for 180x60cm Mat: Dimension: W180x D60cm (approx: 72"x24") Thickness: 8mm (approx: 5/16") #ADA #GardenMat #Aquascaping