IPW Industries Inc pre filters are made in the USA that are longer lasting and providing better removal of contaminants to protect your reverse osmosis system. These standard size filters are 10" and compatible with all standard size under counter RO systems. 1st Stage: High-Grade 10" high-capacity polypropylene sediment filter -removes dust, particles, and rust. 100% pure high grade polypropylene depth filter with exceptional dirt-holding capacity translates to longer life and fewer change-outs. The 2nd and 3rd Stage is a high grade Coconut Shell Carbon Block 10" filter which gets rid of unpleasant chlorine, tastes, odors, cloudiness and colors. Carbon block filters are made with compressed carbon to provide a uniform structure to prevent bypass or channeling. Compatible for APEC RO-45, RO-90, RO-PERM, RO-PUMP and all other standard size under counter reverse osmosis systems. IPW Industries Inc has been in business for over 15 years. IPW is a proud member of the WQA (Water Quality Association) and have been experts in the water quality industry. **Please note this is a compatible spare part and the manufacturers' names and part numbers have been used for reference purposes only. Economical light weight filters for standard10" housings. IPW Industries Inc sediment filter cartridge's coreless design is an economical solution to pre-filtration for many applications. These are used widely as pre-filtration for RO systems and whole house filtration for high sediment water sources. They are also used in applications such as Ice Machines, Film Processing, Beverage, Coffee, Analytical, Wineries, and many others. 100% Polypropylene Sediment, 5 Micron Reduces fine sediment, sand, silt, rust and precipitated scale Suitable for Municipal and well water 10" x 2.5" Filter 5 Micron Filtration This filter set includes: (x2) 5 Micron coconut shell carbon blocks (x1) 5 Micr Additional Details ------------------------------ Product description: IPW Industries Inc pre filters are made in the USA that are longer lasting and providing better removal of contaminants to protect your reverse osmosis system. These standard size filters are 10" and compatible with all standard size under counter RO systems. 1st Stage: High-Grade 10" high-capacity polypropylene sediment filter -removes dust, particles, and rust. 100% pure high grade polypropylene depth filter with exceptional dirt-holding capacity translates to longer life and fewer change-outs. The 2nd and 3rd Stage is a high grade Coconut Shell Carbon Block 10" filter which gets rid of unpleasant chlorine, tastes, odors, cloudiness and colors. Carbon block filters are made with compressed carbon to provide a uniform structure to prevent bypass or channeling. Compatible for APEC RO-45, RO-90, RO-PERM, RO-PUMP and all other standard size under counter reverse osmosis systems. IPW Industries Inc has been in business for over 15 years. IPW is a proud member of the WQA (Water Quality Association) and have been experts in the water quality industry. **Please note this is a compatible spare part and the manufacturers' names and part numbers have been used for reference purposes only. Economical light weight filters for standard10" housings. IPW Industries Inc sediment filter cartridge's coreless design is an economical solution to pre-filtration for many applications. These are used widely as pre-filtration for RO systems and whole house filtration for high sediment water sources. They are also used in applications such as Ice Machines, Film Processing, Beverage, Coffee, Analytical, Wineries, and many others. 100% Polypropylene Sediment, 5 Micron Reduces fine sediment, sand, silt, rust and precipitated scale Suitable for Municipal and well water 10" x 2.5" Filter 5 Micron Filtration This filter set includes: (x2) 5 Micron coconut shell carbon blocks (x1) 5 Micr