End snaps into 4 in. (100 mm) drain tile Used for retaining walls Works with block or timber Designed for blocks with height of 8 in. high or shorter Installation at ground level Box of 12 Drains - Wall Drain Pro is a simpler, more effective wall drain. The Wall Drain Pro provides an improved way to daylight retaining walls by solving water drainage in a visually pleasing way. APPLICATIONS: -Retaining walls -Works with block or timber -Designed for blocks with height of 8 in. high or shorter -Installation at ground level -End snaps into 4 in. (100 mm) drain tile Aesthetically pleasing Easy installation Drain height easily modified for use with any size block Integral component of wall construction Multiple color options to match the block