Genuine Hozelock Cyprio Brand, not generic.  

Bioforce 1000/4500 (1000gallon/4500liter)

Maintenance Service Kit

Complete Kit Includes (See photos):

• Replacement 9watt UV Bulb
• Replacement Filter Sponge (see photo for style)
• Replacement Gasket Set
• Replacement O-Ring Seal Set

Original packaging with imperfections, but this kit is new and never used.

Replacement filter sponge (as pictured) for the Original design Hozelock Cyprio Bioforce 1000/4500 Measuring 300mm (11.8") High x 135mm (5.43") Wide - Centre Hole 65mm (2.55").  Foam with a little discoloration from storage, but doesnt effect its performance.