Crown 4-1/4" - 41

This distinguished 4-1/4" - 41 crown mould measures 4.254" width by .750" thickness, allowing the pattern to be machined sprung (laying horizontally flat) out of four-quarter lumber on an industrial moulder. The renowned supporting profile contains 9/32" by 9/32" perpendicular lines on the top left. Those lines connect to a 63/64" convex arc with a 9/32" tall vertical line segment and a 1/4" by 1/4" notch in the center. Merged with a 55/64" concave semicircle tangent to a straight line and a 5/16" broad by 15/64" tall squared step with a 5/16" horizontal line on the bottom right side of the pattern. The fixed spring angles are at thirty-eight and fifty-two degrees; these particular back bevels keep the exposed face side of the profile parallel to the wall and ceiling when installed, as well as set the oriented height at 3-1/4" tall with a projection of 2-3/4" across the top.