# LM PRO Series Ultra-Slim Fine Pitch Indoor Fixed LED Display > Ultra-slim fine-pitch LED wall for auditoriums, lecture halls, stages and conference spaces. 28 mm, 4.1 kg cabinets in P0.9 to P2.5, with full front service. LED Express is the North American brand for LED displays: movable LED posters and all-in-one walls, fixed indoor and outdoor LED, and transparent and holographic LED. It serves the United States, Canada and Mexico. - Web page: https://led.express/products/lm-pro-series/ - Full content (Markdown): https://led.express/products/lm-pro-series/index.md - Language: English. Also in: [Español](https://led.express/es/productos/lm-pro-series/llms.txt), [Français](https://led.express/fr/produits/lm-pro-series/llms.txt) ## Key facts - Type: SMD - Size: 600×337.5×28mm - Pixel pitch: P0.9, P1.3, P1.6, P1.9, P2.5 - Service access: Front - Cabinet Size: 600mm×337.5mm×28mm - Cabinet Material: Die-casting Aluminum - Weight: 4.1kg - Refresh Rate: 2880Hz~3840Hz - Viewing Angle: H160°/V140° - Model: L091M Pro, L121M Pro, L151M Pro, L181M Pro, L251M Pro ## Related pages - [Indoor fixed](https://led.express/products/fixed-installation-led-display/indoor-fixed-led-display/index.md) - [H3 Series](https://led.express/products/h3-series/index.md): Ultra Fine-Pitch 16:9 Video Wall - [LX-O Series](https://led.express/products/lx-o-series/index.md): Ultra-Slim High-Refresh Indoor Commercial LED Display - [TB Series](https://led.express/products/tb-series/index.md): Commercial Outdoor High-Refresh Screen - [Configure a wall](https://led.express/wall-builder/?display=lm-pro-series) - [Request a quote](https://led.express/quote/?display=lm-pro-series) ## More - [Site index](https://led.express/llms.txt) - [All displays](https://led.express/products/index.md) - [Request a quote](https://led.express/quote/)