Sash plane | Article about sash plane by The Free Dictionary
A carpenter’s plane for trimming the inside of a window frame or doorframe; has a special notched cutter.
References in periodicals archive
An upper dilution air supply bathes the sash interior with clean air, eliminating chemical fumes along the sash plane
This down-wash of uncontaminated laboratory air behind the sash plane
provides a "dynamic barrier" between the laboratory worker and the contaminated air in the hood interior.