Amazon.com - Displays2go Set of 24, Clear Box Frames for 4 x 6 Pictures, Magnet Enclosures, Countertop Photo Holders for Portrait or Landscape Prints - Clear Acrylic
Custom Neon Color Rectangular Shadow Box Picture Frames | Clear Home Design
MCS Acrylic Box Frames
MCS Clear Box Frames | BLICK Art Materials
MCS Box Frame (11 x 14") 11114 B&H Photo Video
Frame SHADOW CUSTOM Acrylic Clear Lucite Box With Canvas. Made in USA. Custom Sizes Welcome - Etsy
Modern Acrylic Shadowbox with Linen Canvas 3" Depth - UV Grade – Wexel Art
Acrylic Box Frame - SmallCorp
The Clear Acrylic BOX 16x20 FRAME - bundle of 6 frames - Picture Frames, Photo Albums, Personalized and Engraved Digital Photo Gifts - SendAFrame
MCS Acrylic Box Frames
MIRA-K Acrylic Borderless Picture Frame with Magnetic Closure 5”x7” New In Box  | eBay
Found some vintage clear box frames and threw some recent stickers in it. : r/Supreme
Acrylic Box Frame Manufacturer & Supplier in China