Epson 502
Fits these models: ET-2700, ET-2750, ET-2760, ET-2850, ET-3700, ET-3710, ET-3750, ET-3760, ET-3830, ET-3850, ET-4750, ET-4760, ET-4850, ET-15000, ST-2000, ST-C2100, ST-3000, ST-4000, and ST-C4100

Some of acceptable sizes, in inches

• Letter 8.5×11, half-letter 5.5×8.5
• Legal 8.5×14
• 4×6, 5×7, 8×10

Plain paper: 17 lb (64g/m²) to 24lb (90g/m²)
Envelopes: No. 10 (4.1“×9.5”) 20 lb (75g/m²) to 27 lb (100g/m²)

From https://files.support.epson.com/docid/cpd6/cpd60203.pdf