This is a simple frame for a 16x16 LED Matrix with a with of 160x160mm., I printed the frame and the grid in PETG. For the 'glass' I used a
BTF-LIGHTING WS2812B RGB 5050smd Individually Addressable Digital 16x16 256 pixels 6.3in x 6.3in LED Matrix Flexible FPCB Dream Full Color Works
16x16 led matrix grid 3D Models to Print - yeggi
Size and Type: 16x16 led matrix, 256 pixels ws2812b digital flexible led panel. Quantity: 2pcs; Width :16cm (6.3in) and Length:16cm(6.3in). Working
HJHX 2pcs Ws2812b LED Matrix 16x16,256 Pixels RGB 5050SMD Full Color Individually Addressable Digital Led Array,Programmable Flexible Led Screen Panel
WS2812B 16x16 Programmable Neopixel Flexible Matrix LED Panel
LED Matrix WS2812B ESP32 16x16 grid screen picture frame by
STL file Frame for 12812B LED Matrix 16x16 🖼️・Template to
Arduino 16x16 WS2812B RGB Matrix Animation Picture Frame
ws2812b matrix 16x16 3D Models to Print - yeggi
16x16 led matrix grid 3D Models to Print - yeggi
mouse brain matrix by 3D Models to Print - yeggi - page 59
Gravity: Flexible 16x16 RGB LED Matrix - DFRobot
LED Matrix WS2812B ESP32 16x16 grid screen picture frame - 3D