Abstract: A two-piece device for selectively retaining a peripheral portion of a panel of screen mesh material within a spline track of a screen enclosure frame member includes a first piece functioning as a main body and a second piece functioning as a locking member, which is received through the main body slot. During use, a peripheral edge of a screen panel is draped over a spline-receiving track of a screen enclosure frame member, a hook portion of a planar base portion of the main body is inserted into the spline-receiving track, and the locking member is lowered to wedge the device into the track to temporarily pin the screen in place while a user inserts spline into the track.