April 3, 2020

Dear H&B AFC Customers:

Our priority is the health and welfare of both our employees and yours.

Over the last few weeks, we have taken precautionary measures to help prevent the spread of the virus. Our facility is continually deep-cleaned, and we have curtailed office activities. We continue to operate the warehouse for pick up and deliveries, which will now be handled on the dock and not in the office.

H&B's commitment to you and your company includes implementing the following steps to protect our customers, partners, and employees.

• We are carefully monitoring the rapidly changing situation, following guidance from both the CDC and local health authorities.

• Our employees take seriously the cleanliness of our equipment and air filters that we ship to you. We know that this is more important than ever.

• It is always our goal to keep your HVAC equipment functional and to maximize efficiency through the use of our high-quality filtration media.

• H&B is committed to adhering to all our customers’ policies and procedures while visiting or delivering to your facilities.

We are encouraging our team members to follow local health authorities’ best practices such as frequent hand washing, social distancing, and staying home if they are feeling ill.

In short, we feel privileged and are committed to the delivery of superior air filtration.

Best Regards,

Billie Ham

H&B Air Filter Co.

President

H&B Air Filter Company