Type 421D Galvanized Slotted Channel Grate - 19.69” trm Iowa DOT Note:

Iowa DOT Note:

The erosion control mat provides a place for vegetation to grow and structure open fiber structure has enough area for grass and plant roots to take hold without being washed out from hillside water run-off

To ensure optimal protection against freezing temperatures

must be purchased with a MegaDeck Mat***

The green roof drainage layer mats are the ideal roof drainage solution

Type 421D Galvanized Slotted Channel Grate - 19.69” trm Iowa DOT Note:LOAD CLASS A EN 1433 3,372 LBS 70 PSI For use with ACO trench drain channels. Note: This product must be ordered with an ACO Trench Drain System and cannot ship alone.