Distributor Pad
The purpose of distributor pad is distributing water across the whole pad. It will enhance the evaporative process.

Evaporative cooling pads are very efficient and is a great cost-effective cooling media for maintaining the right climate for any facility. Designed to work alongside air filters, cooling media helps to maintain a comfortable operating temperature while keeping the air sterile for safe and accurate procedures. An evaporative cooling system relies on its pads or media, where the air passes through and water evaporates. This process allows the air passing through to cool down. By choosing  evaporative cooling pads, it allows for more precise temperature control along with air filtration to remove contaminates from the air.