Product information "Adafruit LED Charlieplexed Matrix - 9x16 LEDs - Red"
These are 9x16 Charlieplexed LEDs designed to match with the Adafruit 16x9 Charlieplexed PWM LED Matrix Driver - IS31FL3731. You don't get any resistors or driver chips with this grid, its just a mess of LEDs in a charlieplexed arrangement
This is the Red version.
43.3mm x 27.8mm x 2.4mm / 1.7" x 1.1" x 0.09"
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