Field glossary

Infill

Granular sand or coated sand brushed into the fibers to add ballast, stand the blades up, and protect the backing

Used across 3 Anvilfield field guides, most in Landscaping.

Also defined as

Concrete: The pickets, glass, cable, or mesh filling the guard, which must resist 50 lbf on a 1 sq ft area
Granular material brushed into synthetic turf that sets the fibers, holds the carpet, and cushions

Where this shows up