diff --git a/src/extras/q2009/interconnect-x.scad b/src/extras/q2009/interconnect-x.scad
new file mode 100644
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--- /dev/null
+++ b/src/extras/q2009/interconnect-x.scad
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+/* Interconnect frames along the x-axis (the longer side)
+ *
+ * SPDX-FileCopyrightText: © 2024 Brian S. Stephan <bss@incorporeal.org>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+include <parameters.scad>
+include <components.scad>
+use <frames/pieces/box/front-or-back.scad>
+
+module interconnect_frame_half_piece() {
+	translate([0, frame_y/2-frame_wall, 0]) difference() {
+		front_or_back_box_frame_piece();
+		translate([0, (-frame_y+frame_wall)/2-panel_overhang_amount, 0])
+			cube([overhang_panel_x, frame_wall+panel_overhang_amount*2, frame_z], center=true);
+	}
+}
+
+module interconnect_frame_piece() {
+	difference() {
+		union() {
+			// slight translate is to make this a 2-manifold in OpenSCAD
+			translate([0, -0.01, 0]) interconnect_frame_half_piece();
+			mirror([0, 1, 0]) interconnect_frame_half_piece();
+		}
+		rotate([0, 0, 90]) translate([-frame_y/2, 0, 0]) frame_cable_routing_hole();
+	}
+}
+
+interconnect_frame_piece();