San Diego Plastics
2220 McKinley Avenue
National City  CA  91950
800/925-4855   619/477-4855   FAX 619/477-4874

King Plastic Corp Products


front hatch dock box tackle center fight chair

King StarBoard® XL is a lighter, more economical version of the popular King StarBoard®.

This 100% virgin marine-grade polymer has a high density polyethylene cap and a closed cellular inner core which has an excellent surface finish that looks good enough to use in high-visibility applications where structural strength and a finished edge are not important. King StarBoard® XL sheets are up to 30% lighter in weight than King StarBoard, and are made with the same textured surface and colors for a perfect match. As with King StarBoard®, King StarBoard® XL is made with the exclusive K-Stran® process for superior consistency and flatness, and has a thickness tolerance of plus or minus 5% (unlike ordinary polymer sheets that use 10% as an acceptable tolerance).

Popular Applications

Cutting Boards, Deck Component and Equipment Mounts, Cockpit Covers, Tackle Centers, Recess Hatches and Bait Well Covers, Electronics Mountings, Doorstops and Thresholds.

General Applications

  • Unique (closed-cell) cellular marine-grade sheet.
  • Weighs up to 30% less with the same surface finish as King StarBoard.®
  • Ideal for fabricating any boat part where high structural strength or a finished edge is not required.
  • Precise tolerances ensure consistent color, thickness and density–even for thicker gauges.
  • Holds staples and screws securely.
  • Environmentally stabilized for harsh sun and tough marine environments.
  • Will not rot, swell, splinter or delaminate when exposed to humidity or water.
  • Resists odor, even in wet environments.
  • Easy to clean and never needs refinishing.
  • Matte-textured finish on both sides.
  • Easy to fabricate using standard woodworking tools.
  • Available in eight standard King StarBoard colors to match or accent any gelcoat.
  • Unlimited custom/proprietary colors.
  • Forms easily for smooth curves.
  • Available in large sheets up to 60” x 96” or 48” x 96”.
  • Custom sheet sizes available.
  • Shipped with a protective masking on one side.
  • Proven on thousands of boats and yachts.
  • Experienced boat builders and boaters know the King StarBoard® brand and trust it more than any other.

Sheet Size:(in/mm)
60″ x 96″ (1524mmx 2438mm)

Standard Gauge:(in)
1/4″ | 3/8″ | 1/2″ | 3/4″

Approximate Weight:(lbs)
48″ x 96″
32 lbs | 48 lbs | 64 lbs | 96 lbs
60″ x 96″
40 lbs | 61.5 lbs | 80 lbs | 120 lbs

Standard Gauge:(mm)
6.4mm | 9.53mm |12.7mm | 19mm

Approximate Weight: (kg)
48″ x 96″
14kg | 22kg | 29kg | 43.5kg
60″ x 96″
18kg | 25.4kg | 32.7kg | 49kg

Tolerance information: Gauges ± 5%, both width and length Plus Only at room temperature.

Custom sheet sizes and gauges available.

Properties Units ASTM StarBoard®XL
Density g/cc D1505 .77
Tensile Strength @ Yield psi D638 >3,300
Tensile Modulus
psi D638 165,000
Elongation @ Yield % D638 9.6
Flexural Modulus psi D790 130,000
Flexural Stress @ 5% Strain psi D790 2,990
Compressive Properties 10% Strain psi D695 2.910
Durometer Shore D D2240 68
Izod Impact Resistance ft.lbs./in.2  D256 1.4
Heat Deflection Temp. 66 psi ºF  D648  188º
Screw and Nail Withdrawl lbs D1761 489 & 43

*All values are determined on specimens prepared according to ASTM. Nominal values should not be interpreted as specifications.
King StarBoard® XL is made entirely from FDA and USDA approved materials.
King StarBoard® XL meets ASTM D4976 PE235



*Note: These images illustrate the various color combinations. Due to the wide variances in computer monitors and printers, King Plastic Corporation does not recommend using these graphics for color matching purposes. Please contact your distributor for details.


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