$fn=64;

// Divider Panel Parameters
length = 100;      // Length of the panel (mm)
height = 30;       // Height of the panel (mm)
thickness = 2;     // Thickness of the panel (mm)
corner_radius = 2; // Radius of the rounded corners (mm)

// Render the panel flat on the XY plane for optimal 3D printing
linear_extrude(height = thickness) {
    hull() {
        translate([corner_radius, corner_radius]) 
            circle(r=corner_radius);
        
        translate([length - corner_radius, corner_radius]) 
            circle(r=corner_radius);
        
        translate([length - corner_radius, height - corner_radius]) 
            circle(r=corner_radius);
        
        translate([corner_radius, height - corner_radius]) 
            circle(r=corner_radius);
    }
}