Half Moon Shell For Keystone Full Cutoff Wall PacksElevate the visual impact of your building's exterior with Keystone's XFit Full Cutoff Wall Packs, now with our new FormFit technology. They have a small footprint but provide the desired light output you want. The new full cutoff wall pack is also compatible with Keystone's FormFit shells that fit on or over the existing fixture, so you can transform them into decorative fixtures by adding a simple accessory no complex special orders required.