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Grizzly classifier bars are spaced about 3/4" apart. The removable classifier screen weighs about 3 1/2 pounds. Mounting to the Keene A52 requires two 1/4" holes to be drilled on the sides of the hopper. The mounting holes are pre-cut to bolt onto the JOBE sluice and the JOBE sluice stand. Hopper works on the JOBE 45 Yellow Jacket, the Keene A52 sluice, or most any 10 inch wide sluice. The dredge attachments are just $25 additional. The water supply can be adjusted with a valve which is included.Ĭomes ready to go as a hi-banker hopper or can be rigged to be used as a 1.5" or 2 inch or 2.5" dredge hopper (pictured with optional dredge adapter). The water inlet is equipped with a 1 1/2 inch slip fitting which can be removed to use 1 1/2 inch pipe fittings. The top of the hopper is 18 inches x 18 inches with spray bars. The grizzly can be removed by unscrewing it from the back of the hopper. It features 1/2" spacing between the bars and only every other bar is welded to the box allowing for easier jammed rock removal vs. The (grizzly) classifier screen has recently been redesigned for durability and ease of use. (Hopper is pictured with the optional dredge adapter). Use this quality Hibanker or Dredge Hopper to convert your stream sluice into a Hibanker or land dredge. GOLD BUDDY Highbanker / Dredge Hopper # 6508 (Discontinued) please see the alternate hopper boxes below.