Mattress Rock 60mm – 120mm Mattress Rock is a larger stone than ballast usually around 60mm – 120mm uses include creek, dam and river drainage to control erosion.
Ballast – Septic Septic ballast used for septic systems and drainage applications sizing is approximately 50mm
Large Walling Rock Larger walling rock include decorative applications for front yards, landscape features and retaining walls. Sizing ranges up to 1 metre diameter.