☰ mtdb > Tricks > Trick< Back to all tricksGlass Box Permalink: mtdb.co/?GlassBox Creator: Devin Knight This is a professional looking acrylic box that is just the right size for the Glass Box Prediction effect. A clear box that is 4x 4x 3.5 the exact size that Devin Knight recommends in his new book. Why search for this in local stores when you can get one ready to go?Note: Box only - No... Buy From: REVIEWS No Reviews Yet. about | login | register | dealers | tricks | creators | contact |