Home > Generic Treadmills > PT300 UBV-2200B New Inverter Frequency Converter PT300 UBV-2200B New Inverter Frequency Converter for Impluse Treadmill PT300 UBV-2200B New Inverter Frequency Converter For Impluse Treadmill. Price: $314.00 Note: Prices on some products change frequently. To see more details, check the latest price, or to purchase, please visit the link below: