The SPEEDBOX Squarebox 100-145 from SMDV is an economical 39.4 x 57" light shaping tool that's ideal for portraiture, small and medium size groups, fill-lighting, table top, and small to midsize product photography. Designed for strobe flash photography, the softbox comes with a removable front diffuser and removable inner baffle. The diffuser and baffle can be used together for maximum softening of the output. Removing the inner baffle will give you a more intense and specular light with higher contrast, while shedding the front and inner diffusers turns the softbox into a large reflector with maximum brightness and contrast. The SPEEDBOX has additional control via an optional fabric grid that attaches to the front of the softbox. This grid narrows and concentrates the light source, controlling spill and adding directional control and contrast. For increased longevity the unit features a heat-resistant and ventilated design and the diffusers are constructed of non-yellowing fabric.