Crystal Quest CQE-US-00310 Triple Undersink Water Filter Conveniently provides 20,000 gallons of water. (2-4 years, or when the flow of water will automatically either stop or slow down greatly.) Great for homes, apartments or office use. Installs neatly under the sink. Comes with an attractive faucet and all necessary installation hardware. Please note: When considering installation, if current under sink plumbing is hard copper tubing the saddle valve would be used; for flex tubing the T-valve would be required. Saddle valve is sent with order unless T-valve is specified. Standard 1/4" connections; if 3/8" needed additional conversion package should be ordered 15"L x 14"H(10"+ 4" to change cartridge) x 5"W Operating Pressure: Min 20psi - Max 60psi(pounds per sq. in.) Operating Temperature: Min 40 degrees f Max 90 degrees f Max flow rate: .5 gallons per minute