Bank letter verification should be on Bank Letter head. Lists out the following information: 

• Legal business name that matches the IRS letter 100% to a T
  
  
• Business Checking/Saving Account
• Routing Number
• Account Number
  
  
• Bank Rep Name
• Bank Rep phone number
• Bank Rep physical Signature

Voided check

• should have Legal business name that matches the IRS letter 100% to a T
• Address matching the physical location