As of March 2024 R0993700 is the new Part Number for the DEL Ozone UV Lamp (old) Part Number 9-1421-01.
UV Replacement Lamp is for DEL Ozone's UV-C Germicidal UV Unit for residential pools up to 50,000 gallons.
R0993700 (formerly 9-1421-01) UV Lamp details:
RESOURCE CENTER | Download the following here:
DEL Ozone UV-C Installation and Operations Manual