Skinrock › Rainbow Image 1 of 1 Rainbow $0.00 Please note: 1 slab = 32 sq.f. Qty of slabs should be multiplied by 32 to find the Qty of sq.f. Add To Cart Added! Please note: 1 slab = 32 sq.f. Qty of slabs should be multiplied by 32 to find the Qty of sq.f.