Kupo 4ft Square Tube Female for Butterfly Frame

The Kupo BF40 is a 4ft (1.2m) length of black anodized 30x30mm square aluminum tube, machined as the female half of Kupo's butterfly frame system. It pairs with a matching male tube section (BF45) and Kupo's frame corners to build a custom-size butterfly frame for holding diffusion, silk, nets or blackout material, and its quick-release spring pin design makes assembly and breakdown fast on set. A basic building block for anyone assembling non-standard frame sizes.