ALZO 16x9 Bi-Color LED Light Diffuser, Set of 3 - ALZO Digital
Led Diffuser Cover | Led Light Diffuser | Led Lamp Diffuser | Cover Led Light - 3mm - Aliexpress
Ceiling Light Panels at Lowes.com
Fluorescent Light Covers for Ceiling Light Diffuser Panels-Space Pattern-Fluorescent Light Covers for Classroom Office-2ft x 4ft Drop Ceiling Fluorescent Decorative,Purple