Premium HEPA filter replacement compatible with Therapure Air Purifier TPP240 TPP230. It replaces Therapure part TPP240F. Approximate Dimensions: 23 x 4 x 2 inches. 1 Filter included. Enviro Therapure is a trademark or registered trademark of its respective holder. This is not a Enviro OEM product. Use of it does not imply any affiliation with or endorsement by the holder. The trademark holder is not affiliated with Nispira and does not endorse this product. Any use of the name Enviro or model designation for this product is made solely for purposes of demonstrating compatibility.