Seed Pro® Bulk Box Tender - Unverferth Seed Tenders

The Unverferth Seed Pro® bulk box tender not only delivers seed directly to your planter or drill, you can position it 90 degrees to the unit for conveying between two other sources. The model 400 easily carries four 50 seed unit boxes and the model 200 holds two boxes. 

For optimum transport safety, standard equipment heavy-duty double-axle undercarriage features lighting, reflective striping, transport chains and brakes.


    • Exclusive design not only fills planters and drills, but can be positioned 90 degrees to transfer seed from one container to another
    • Cupped and cleated belt, in choice of 12" inside an 8" tube, or 8" inside a 6" tube gently moves the seed
    • Available with a 6" conveyor for up to 12 bushels per minute unloading on model 400 and 200, or an 8" for unloading up to 25 bushels per minute for model 400
    • Standard two-stage downspout reaches 30' for filling planters up to 12-row, 30"
    • 18' steel conveyor rotates a full 180 degrees and features telescopic downspout for extended optimum unloading reach
    • Conveyor can be locked into position in 3/4" increments which translates to being able to stop every 10" at conveyor spout
    • Stainless-steel pivot track for long life and durability
    • 60" of hydraulically operated vertical height adjustment for easy movement into the loading/unloading position
    • Downspout features tool-free removal to efficiently use for filling between two other sources
    • Easy-opening 5" x 6" doors with rubber funnel regulate seed flow
    • Powered by Honda® 11 h.p. (340CC) gas engine with electric start
    • Top-mounted, 6-cubic-inch hydraulic motor pulls the belt forward, keeping it tight for the most efficient and gentlest seed movement
    • Handle the widest variety of seed including cotton, peanuts and wheat
    • Control panel with choke, ignition and throttle controls mounted on conveyor side permits convenient engine operation
    • Brush-type seal on conveyor inlet prevents seed from back feeding into the hopper for cleaner operation
    • Wired remote for easy on/off and raise/lower operator control and features a magnetic mount and cradle for easily storing on your Seed Pro box carrier
    • Hinged latches with easy-to-use locking system for securely fastening boxes
    • Easy reach design permits loading of boxes from left or right side on model 200, and rear or either side on model 400
    • Large funnel design allows quick, clean unloading. Locking covers are standard for storage ease
    • The undercarriage for the Seed Pro bulk box tender features rugged steel construction, rubber-cushioned suspension, tandem with electric brakes, highway-rated tires, lights, reflective striping and and transport chains
    • Trademarked ivory and tan colors in  durable protective coating and silicone sealed seams for long life


    • T&G Applicator makes seed lubrication with graphite or talc quicker, easier and cleaner.
      • Patent-pending design for constant application for ideal planter lubrication and more consistent seed placement
      • Automatically turns on and off in conjunction with conveyor
      • 50 Lbs. capacity and includes lower cleanout door
      • Weather-tight hopper lid keeps contents dry; gas-strut lift assist for easy opening and filling
      • Augers material into conveyor inlet and is powered by tender's hydraulics
      • Auger and internal agitation ensure even coating and smooth material flow
      • Includes metering control for delivering the correct amount
      • Available as factory- or field-installed accessory
    • Gain power and efficiency with one-person, wireless remote control operation
      • 2-Function - Model 200
        • Conveyor on/off
        • Conveyor Height
      • 3-Function - Model 400
        • Conveyor on/off
        • Conveyor raise/lower
        • Open/close doors
      • 6-Function - Model 400 adds to the above
        • Starting and stopping of engine with emergency off switch
        • Engine throttle control
        • Left/right conveyor swing
    • Scale package allows you to determine quantity of seed used and available as factory- or field-installed option
    • Optional downloader lets you keep information electronically for using with a personal computer
    • Roll printer provides instant verification and a hard copy for each load
    • Optional downloader lets you keep information electronically for using with a personal computer
    • Roll printer provides instant verification and a hard copy for each load
    • Optional 3-stage downspout extends reach out to 40' for easily filling 16-row 30" planter boxes
    • Spare tire provides added security for quick changes to get you back on the road in short order
    • An optional canvas cover with elastic band holds tightly around the hopper opening for protecting seed from dirt, dust, debris and water
    • Spotlight for top of conveyor for easier nighttime filling


    Model 400 200
    Overall Length (Conv. Forward) with Bumper Hitch 22'5" 20'6"

    with Gooseneck Hitch

    23'6" -
    Transport Width 8'6" 8'6"
    Transport Length 18'9" 17'
    Transport Height - wtih boxes 11'1" 10'9"
    Transport Height of conveyor 9'3" 8'2"
    Undercarriage Length 18'6" 17'
    Underframe Clearance 1'2" 1'1"
    Appx. Empty Weight (lbs.) 5,200 3,800
    Conveyor - Maximum Unloading Height 12'8" 12'4"
    Conveyor -Reach at Max Height 11'3" 11'
    Conveyor -Minimum Unloading Height 9'3" 8'2"
    Conveyor - Reach at min. Unloading Height 13'3" 13'
    Reach with Standard 2-Stage Spout 30' - (12-Row 30" Planter) 30' - (12-Row 30"Planter)
    Reach with Optional 3-Stage Spout 40' (16-Row 30" Planter) 40' (16-Row 30" Planter)
    Appx. Empty Weight (lbs.) 5,200 3,800
    Tongue Weight -Loaded (lbs.) 1,000 700
    Hitch Type Std./Opt. 2-5/16" Ball/3" Pintle 2-5/16" Ball/3" Pintle
    Lighting Connector 7-pin flat 7-pin flat