... Product Description LED display (leading supplies)Indoor - pitch 3.5mm, 4mm, 4.2mm, 4.4mm, 6mm, 7.62mm ... , 8mm, 10mm, 12mm, etcOutdoor - pitch 10mm, 12.5mm, 14mm, 16mm, 20mm, 22mm, 25mm, 28mm, etc Project ... InformationPitch & LED3.5mm, the smallest pitch for commercial use up to now ... we should maintain the screen of pitch 3.5mm in the front but not the rear. It ...