Wage Correction Compatible Envelope found here: https://www.amazon.com/dp/B0131M2AYC
Wage correction forms are not dated, and good for all years
Each set includes Copy A, Copy B, Copy C, Copy D
Order by number of recipients needed not sheets
Item Number TF5317 Laser W-2C 4-Part Corrected Wage and Tax Statement Set includes equal copies of W-2C SSA Copy A, W-2C Employee Copy B, W-2C Copy 1, W-2C Employee Copy 2. Size: 8 1/2 x 11 - 4 part form