Illuma Small Soft Box - 22 x 30 x 9 Illuma boxes sport a thinner profile - a half-radial depth - which produces better efficiency, more stability and greater mobility than other soft boxes. They offer several unique features, including a removable front diffuser, silver-with-white interior surfaces and two graduated inner baffles for contrast changes. Two graduated inner baffles. Removable front diffuser. Thin profile.