KastLite Black Egg Crate Fluorescent Light Covers - Nominal 2' x 4' Polystyrene Drop Ceiling Grid Diffuser & HVAC Air Vent Grille - 1/2"x1/2"x3/8" Cell Eggcrate Panels, 5-Pack - Manufactured in USA - KL-AL-EGCP-B-5PK

• DURABLE INJECTION-MOLDED BUILD: High-strength polystyrene egg crates with single-piece molding for lasting durability and scratch resistance. All black ceiling tiles feature a half lap edge for seamless rows. MULTI-PURPOSE APPLICATIONS: This egg crate light diffuser doubles as a fish tank divider, HVAC vent, or display panel—perfect for greenhouse supplies, awnings, signage, and residential or commercial use. OPTIMIZED CELL DESIGN FOR AIRFLOW & LIGHT: 2x4 Ceiling tiles with precise 1/2" x 1/2" cells and nominal 3/8" (7.6mm) thickness for even light diffusion, glare control, and enhanced ventilation. EASY CUSTOMIZATION & COLOR-INTEGRATED FINISH: Lightweight, trimmable aquarium egg crate and louvered panels with built-in color that won’t fade, chip, or peel. PREMIUM USA-MADE QUALITY: KastLite plastic egg crate drop ceiling grid covers are USA-made with consistent sizing, durable construction, and trusted in all 50 states., Manufacturer: KastLite