b'CHannEl STriP brUSHES TheMeasurementsrequiredwhen ordering strip brushes are as follows:1.Overall height = O.H. T2.Trim = T3.Length = L OH4.Width = W5.Nature and diameter of filament L6.Use for which the brush is intendedWChannel Strip BrushesStrip Brush BackingStrip Holders - U-Shape4mm 8mm10mm 12mmStrip Holders - H-ShapePage 114 | PF Brady'