A solution for all your onsite and factory needs for slitting, rib forming, and perforating

  • Adjust position of knives and optional perforators in seconds.
  • Manual operation with optional motors available
  • Portable, and easily setup to slit, perforate, and ribform.
  • Made in the USA

    Features & Benefits

    Hover ⁄ click for product features.

    Adjustable Knives Manual Operation Optional Motor Folding Feed Table Adjustable Feed Tray Guides

    1. Adjustable Knives

    Position your knives in seconds with easy access adjustment screws

    2. Dual Cuts with Each Pass

    Slitters come standard with 4 knives that allow 2 cuts on each pass (1 top and 1 bottom knife required for each cut)

    3. Manual Operation

    Can be used for slitting on the jobsite without electricity. When motorizing, the handle is easily removed and replaced with a drive coupler and matching motor base for easy conversion.

    4. Optional Motor

    Standard duty motors for your slitting needs, as well as heavy duty, high torque motors are available for both 110v and 220v single phase operation.

    5. Folding Feed Table

    Feed Table folds easily and securely upward, making it simple and easy to transport and store.

    6. Adjustable Feed Tray Guides

    Quick adjust feed guides with aluminum rollers ensure that your varying widths of metal are quickly squared up for accurate slitting, rib-forming, or perforating.

    Slit Icon


    Each Trim-A-Slitter comes standard with 4 knives that allow two cuts with each pass.
    Ribform Icon


    Adds rigidity to your metal with a slightly raised rib. Also helps to eliminate ripples and adds a decorative ‘shadow line’ to wider fascia and frieze board.
    Perforate Icon


    Optional perforator die sets allow you to perforate 24 gauge steel, .032" aluminum, or copper coil or sheet.
    Increase your productivity onsite or in your shop. The Trim-A-Slitter™ from Van Mark is designed to slit or stiffen aluminum, steel vinyl, or other materials, coil or sheet, quickly and accurately. Helps to increase longevity of your brake by eliminating the practice of scoring the aluminum, which can damage the bending hinge by repeated use, when using a utility knife. Available in 24", 36", and 48" heavy duty models. There is a size for any particular cutting demand. Contact Van Mark today to find out how the Trim-A-Slitter™ will increase both your productivity and your profits. We invite you to contact our sales professionals of your local distributor today to assist you with capacities and capabilities of any slitter and to help you find a productive solution to meet your needs.

  • Hardened steel, double sided slitting knives for long trouble-free service life.
  • Precision ground & Polished knives provides clean burr-free edges in all types of material.
  • Anodized aluminum construction stands up to the rigors of all job site weather conditions.
  • Easy to set up and use knives for slitting, rib forming, and optional perforators reposition in seconds.
  • Slitter knives are easy to configure and can be disassembled to add an optinal perforator die set or additionl knives to meet your changing needs.
  • Folding feed table with roller guides quickly adjusts to different widths of material.
  • We offer a range of optional motors in standard and heavy duty. Suitable for multiple slits, ribs, or perforating a wide range of materials. Also available in both 110v and 220v single phase for international voltages.
  • Brass tipped set screws - Soft brass tips ensure secure position of slitting knives without damage to knives and arbor shaft.
  • Optional perforating die set perforates steel, aluminum, zinc, and copper by producing a lanced perforation allowing 3.3"² of net free area, per running foot of metal.
  • Additional accessories such as extra knives for multiple slites, rib forming, perforators, capacity boosters, and booster blocks are available, sold seperately.
  • Slitter Configuration

    From Factory
    1 Slit
    2 simultaneous slits
    1 single rib form
    From the Factory
    1 slit
    2 simultaneous slits
    1 single rib form
    2 simultaneous ribs
    1 simultaneous slit and rib
    1 double rib up
    1 double rib down
    2 simultaneous single ribs
    1 simultaneous slit & rib
    1 double rib (Facing up)
    1 double rib (Facing down)
    24" (61.0 cm)
    56 lbs (25.5 kg)
    24" (61.0 cm)
    74 lbs (33.6 kg)
    36" (91.4 cm)
    103 lbs (46.8 kg)
    48" (121.9 cm)
    131 lbs (59.5 kg)
    * Includes Booster Blocks (2 ea.),

    Maximum Thickness
    Aluminum (3003H14)
    .040" (1.0 mm) slitting, .032" (0.8 mm) perforating
    Galvanized Steel
    24 ga. (0.6 mm)
    Painted Steel (Grade D)
    24 ga. (0.6 mm)
    Roofing Copper
    24 oz.
    .040" (1.0 mm)
    Stainless Steel (304L)
    Please call for capacities
    * Capacities are based on standard metal properties for coil & sheet. Please contact our factory for capacities on your specific material. 1-800-826-6275

    View our Slitter Accessories page for specs on our optional equipment.


    1 Year Manufacturer's Limited Warranty

    Van Mark Products Corporation warrants this product against defects in material or workmanship for or a period of 1-year from the date of original purchase. For details, click here.




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