Jul 6, 2023 · Dimensions of Our Corten Steel Raised Garden Beds. We have three different size options to fit your garden space. Our steel bed kits currently come in the following sizes:-Small. Dimensions: 40" x 40" x 14" high. Weight: 62 lbs. -Medium. Dimensions: 48" x 48" x 16" high. Weight: 130 lbs. -Large. Dimensions: 48" x 96" x 16" high. Weight: 210 lbs