Artificial Rock Cover for Round Wide Septic Lids. An artificial rock to cover septic lids 30" wide plus a junction box up to 7" high. Rock material is incredibly realistic, durable, and yet lightweight. Made from recyclable materials that will not fade in the sun or crack in cold weather. Made in the USA. Ground stakes are included. Dimensions: 36" L x 36" W x 9" H Weight: 12 lbs.