Choose Options Compare Quick view Techno-Aide Brand Products 4" rectangle X-ray block positioner 21.5"x27.5"x4" MSRP: Now: $63.00 - $229.00 Was: 4" rectangle X-ray block positioner 21.5"x27.5"x4"4" Top measures 18" x 24". Can be easily cleaned or sterilized with surface disinfectants. Stealth-Core & Stealth-Cote material ELIMINATES ghosting and line artifacts. Stealth-Core - Uncoated sponge... MSRP: Now: $63.00 - $229.00 Was: Choose Options Compare Quick view