Amendment 0001 is issued to answer questions received regarding the HVAC Air Filters requirement. All questions and responses are listed on the attached amendment document. 5 Year Industrial HVAC Filt... Amendment 0001 is issued to answer questions received regarding the HVAC Air Filters requirement. All questions and responses are listed on the attached amendment document. 5 Year Industrial HVAC Filter IDIQ - Erie VAMC. Please refer to attached solicitation and Attachment A - Filter Schedule for further details outlining the requirement. Questions are due by Thursday, August 20th at 2:00 PM EST.