King MediGrade

The Antimicrobial Polymer Building Sheet for Healthcare Applications


  • Cabinetry and Storage Carts
  • Clean Rooms
  • Dental Facilities
  • Hospitals
  • Locker Rooms
  • Medical Facilities
  • Medical Laboratories
  • Mobile Computer Carts
  • Nursing Homes
  • Nurses Stations
  • Rest Rooms
  • Veterinary Facilities

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King MediGrade® is a super tough, high-density polyethylene building sheet with an advanced antimicrobial technology for protecting the product surface against stain and odor causing bacteria, algae and fungi. Unlike surface antimicrobials, King Plastic’s advanced antimicrobial technology protects against bacterial degradation for the lifetime of the product. It is the product of a proprietary process called K-Stran™, the most advanced manufacturing process for superior flatness and consistency. King MediGrade® has a matte gloss finish on both sides of the sheet. It is environmentally stabilized to withstand the harshest outdoor conditions. King MediGrade® will not rust, delaminate or rot when exposed to UV, humidity or water. Healthcare facilities, medical equipment and case goods made with King MediGrade® will stay cleaner and fresher between cleanings. Studies have shown that surfaces with the antimicrobial technology can inhibit the amount of certain product-damaging bacteria by 99.99%* compared to an untreated surface. The polymer sheet never needs painting or refinishing, works like wood and is easy to fabricate using common woodworking tools and techniques.

Antimicrobial Performance

Standard Sheet Size

in:48” x 96”
mm:1219 mm x 2438 mm

Standard Gauges

mm:6.4 mm12.7 mm19 mm

Approximate Weight 

lbs:40 lbs80 lbs120 lbs
kg:18.14 kg36.3 kg54.4 kg

Tolerance information:

Gauges 1/4″ up to 3/4″ ± 5%
Length and width plus only at room temperature

Custom sheet sizes, gauges, and colors available upon request

Disclaimer: Antimicrobial additive may affect color.

*For bacteriostatic, fungistatic, & algistatic properties. King MediGrade® is exempt from EPA registration under 40 CFR 152.25(a) (commonly known as the “treated article exemption”). The active ingredient in King MediGrade® is EPA registered and accepted for use in polymers and plastics. King MediGrade® effectiveness verified by ISO and ASTM standards. This product does not protect users or others from disease-causing bacteria. Always clean this product thoroughly after use.

PropertiesUnitsASTMNominal Values
Tensile Strength @ YieldpsiD638>4,500
Tensile ModuluspsiD638318,000
Elongation @ Break%D638>600
Elongation @ Yield%D6388.8
Flexural ModuluspsiD790225,000
Flexural Stress @ 5% StrainpsiD7904,480
Compressive Properties 10% StrainpsiD6954,790
DurometerShore DD224069
Tensile Impactft.lbs./in.2D182299
Izod Impact Resistanceft.lbs./in.2D2561.4
Brittleness Temp.ºC (ºF)D746<-75ºC (<-103ºF)
Vicat Softening Temp.ºC (ºF)D1525172ºC (270ºF)
Heat Deflection Temp. 66 psiºC (ºF)D64884ºC (183ºF)
Screw and Nail WithdrawallbsD1761755 & 55

All values are determined on specimens prepared according to ASTM.
Nominal values should not be interpreted as specifications.
King MediGrade® is made entirely from FDA and made with USDA approved materials. King MediGrade® meets ASTM D4976.
King MediGrade® contains no VOC’s.

Standard Colors

Additional Colors

Contact customer service for availability and minimums.

King Advanced
Antimicrobial Technology


Mode of ActionPhysically ruptures the cell membraneReleases ionic free radicals
that react with cell DNA and disrupt the critical life
processes in the cell
Releases toxic bischlorinated phenol (PBC) for consumption or cellular absorption, causing lethal mutations in the cell
Leaching: Bleeding onto the user, into the water, and into the environmentNo leachingLeaches for its mode of actionMust leach to workLeaches for its mode of actionMust leach to work
DurabilityPermanentService life 1-3 yearsService life 1-3 years
CostEconomicalThe cost of silver is highIntermediate
EffectivenessBacteria, fungi and algae that cause stains and odorsAction variable based on
concentration and test or
use conditions
Action variable based on concentration and test or use conditions
Log Reduction(1-6,
1 being the lowest,
6 being the highest)
4 on 24 hour test &
2 hour test
1-2 on a 24 hour test2 on a 24 hour test
DistributionWorld wideVaries by companyNot accepted or available in certain areas of the world

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