Benjamin Moore

3/16" nap use on smooth surfaces: doors, walls of untextured plaster, smooth wood, wallboard, drywall, smooth metal; gloss and semi-gloss paints

3/8" to 1/2" nap use on medium surfaces: sand finishes, lightly textured plaster or wood, paneling, acoustical tile; flat paints(smooth surfaces like drywall or tile with flat paints only)

3/4" to 1 ¹" nap use on rough surfaces: brick, concrete, stucco, textured ceilings or walls, Spanish plaster, corrugated metal, rough wood; flat paints