This is the official high temp pyroceramic glass from Regency. The glass is designed to fit Regency Wood Stoves and Regency Wood Inserts. Please see below for the OEM part numbers and the size of the glass, including the models that it fits. It would be a good idea to reference your user manual as well to compare part numbers. Size 9 7/8″x18 1/2″ Fits the following models: I2100 / I2400 / I3100 /F3000L / F3100 / S3100 / H2100 / Older Unit like R6