Projects & Inspiration

Artificial Rock Size Reference Guide

October 18, 2018

Posted by Ashley VanderWall

The most frequently asked questions about our artificial rocks are about size. We get it - since these fake rocks are designed to mimic real ones, their sizes don't fit into a nice box. To give you an easier way to compare rock sizes, we put together this size reference guide, grouping rocks of similar size together.

Standard Rocks

Ranging from small to jumbo, these fake rocks are handy hiding spots for outdoor fixtures such as electrical outlets, well heads, septic cleanouts and more.

From left: Small, Medium, Large, Extra Large, Jumbo
Artificial rock size comparison - small, medium, large, extra large, jumbo

outdoor essentials small fake landscape rockSmall Rock
17" L x 10.5" W x 8" H

outdoor essentials medium fake landscape rockMedium Rock
18" L x 23" W x 13" H

outdoor essentials large fake landscape rockLarge Rock
27" L x 21" W x 14" H

outdoor essentials extra large fake landscape rockExtra Large Rock
31" L x 27.5" W x 16.5" H

outdoor essentials jumbo fake landscape rockJumbo Rock
28" L x 19" W x 20" H


These artificial boulders are large enough to cover septic tank risers, irrigation equipment, telephone pedestals and more.

From left: Giant Boulder, Large Boulder, Sitting Boulder
Artificial rock boulder size comparison - large, sitting, giant

outdoor essentials giant boulder fake landscape rockGiant Boulder
54.5" L x 40" W x 31" H

outdoor essentials large boulder fake landscape rockLarge Boulder
47" L x 41" W x 22" H

outdoor essentials sitting boulder fake landscape rockSitting Boulder
52.5" L x 35.5" W x 25" H

outdoor essentials giant boulder fake landscape rock

outdoor essentials large boulder fake landscape rock

outdoor essentials sitting boulder fake landscape rock


Skimmers are low to the ground and cover a large surface area, perfect for concealing drain tiles, septic lids, manhole covers and more.

From left: Large Skimmer, Medium Skimmer, Small Skimmer
Artificial rock skimmers size comparison - small, medium, large skimmer

outdoor essentials large skimmer fake landscape rockLarge Skimmer
38" L x 31" W x 5" H

outdoor essentials medium skimmer fake landscape rock coverMedium Skimmer
33" L x 23" W x 6.5" H

outdoor essentials small skimmer fake landscape rock coverSmall Skimmer
21" L x 18" W x 3.5" H

Other Rocks

These rocks are uniquely sized and don't fall neatly in the above categories. Below are different angles of each to offer you a better perspective.

outdoor essentials fake key rockKey Rock
10" x 8" x 5"

outdoor essentials long fake landscape rockLong Rock
31" x 23.5" x 12"

outdoor essentials ground cover fake landscape rockGround Cover Rock
47" x 44" x 13.5"

For more information and diagrams, check out our blog post on how to choose the right size fake rock. You can also contact us by email or reach out to us on Facebook.