Comes in 6" or 12" width. 6" is made of 6061-T6 aluminum (excellent wear and strength.) 12" width sluice (industrial grade) is made of 7075 Aluminum (aircraft alloy and is more expensive.) The 6" sluice comes with 750-800gph bilge pump, water distribution head and hose and costs $395 for a 2 foot and $495 for a 3 foot. The bed plates are 1/2" thick aluminum milled on a CNC Milling machine, and this unit is made in the USA. The 12" sluice has a water distribution hood and is able to accomodate up to 1 1/2" at the input. Input attachment is 1 1/2" pipe thread. The cost for the 12" sluice and hood is $995 for a 3 foot length and $1200 for a 4 foot length. Pump and hoses NOT supplied. A pump capable of 30 to 50 GPM should be used. Length is the length of the machined plates, and the overall length of a sluice is 1 foot longer, so a 2 foot sluice has an overall length of 3 feet. Send me an email. [email protected] I will forward some pictures of the 6" model.