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.
Standard Sheet Size
| in: | 48” x 96” |
| mm: | 1219 mm x 2438 mm |
Standard Gauges
| in: | 1/4″ | 1/2” | 3/4” |
| mm: | 6.4 mm | 12.7 mm | 19 mm |
Approximate Weight
| lbs: | 40 lbs | 80 lbs | 120 lbs |
| kg: | 18.14 kg | 36.3 kg | 54.4 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 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.
| Properties | Units | ASTM | Nominal Values |
| Density | g/cc | D1505 | 0.96 |
| Tensile Strength @ Yield | psi | D638 | >4,500 |
| Tensile Modulus | psi | D638 | 318,000 |
| Elongation @ Break | % | D638 | >600 |
| Elongation @ Yield | % | D638 | 8.8 |
| Flexural Modulus | psi | D790 | 225,000 |
| Flexural Stress @ 5% Strain | psi | D790 | 4,480 |
| Compressive Properties 10% Strain | psi | D695 | 4,790 |
| Durometer | Shore D | D2240 | 69 |
| Tensile Impact | ft.lbs./in.2 | D1822 | 99 |
| Izod Impact Resistance | ft.lbs./in.2 | D256 | 1.4 |
| Brittleness Temp. | ºC (ºF) | D746 | <-75ºC (<-103ºF) |
| Vicat Softening Temp. | ºC (ºF) | D1525 | 172ºC (270ºF) |
| Heat Deflection Temp. 66 psi | ºC (ºF) | D648 | 84ºC (183ºF) |
| Screw and Nail Withdrawal | lbs | D1761 | 755 & 55 |
| Flammability | Rating | UL94 | HB |
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.
| King Advanced | Silver-Based | Triclosan-Based | |
| Mode of Action | Physically ruptures the cell membrane | Releases ionic free radicals | 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 environment | No leaching | Leaches for its mode of action Must leach to work | Leaches for its mode of action Must leach to work |
| Durability | Permanent | Service life 1-3 years | Service life 1-3 years |
| Cost | Economical | The cost of silver is high | Intermediate |
| Effectiveness | Bacteria, fungi and algae that cause stains and odors | Action variable based on | Action variable based on concentration and test or use conditions |
| Log Reduction(1-6, | 4 on 24 hour test & | 1-2 on a 24 hour test | 2 on a 24 hour test |
| Distribution | World wide | Varies by company | Not accepted or available in certain areas of the world |
Dolphin Gray 
Sanshade 
Seafoam 
White/White 
