Engineered to be tough on moisture and friendlier to the environment with no added formaldehyde, Solidium MR/NAF from Del-Tin Fiber offers a perfect balance of the premium MDF performance your application demands – and the protection your green-sensitive project needs. Solidium MR/NAF is an interior panel able to resist periodic moisture exposure while maintaining dimensional stability and reduced thickness swell 30-50% better than untreated MDF panels. And with formaldehyde emission levels more than 3 times lower than CARB Phase 2 standards, Solidium MR/NAF is a smart choice for cabinets, fixtures, and decorative applications in homes, schools, hospitals and other projects in which improved indoor air quality and green building credits are a priority. Solidium MR/NAF delivers the best of both worlds to help you create ideal environments, year after year.
Physical Properties
| GENERAL | DIMENSIONS | ||
| Usage: | Interior use only | Thicknesses: | 3/16" - 1" |
| Raw Material: | Southern Pine fiber | Widths: | To five feet |
| Lengths: | To sixteen feet |
| PERFORMANCE VALUES | ||||
| PROPERTY | THICKNESS RANGE | |||
| Minimum Panel Averages | <3/8" | >3/8" to <1/2" | 1/2" to 3/4" | >3/4" |
| IB - Internal Bond (psi) | 110 | 100 | 90 | 85 |
| MOR - Modulus of Rupture (psi) | 4,050 | 4,050 | 4,050 | 4,050 |
| MOE - Modulus of Elasticity (ppsi) | 405 | 405 | 405 | 405 |
| Face Screw Hold (lbs) | NA | NA | 250 | 250 |
| Edge Screw Hold (lbs) | NA | NA | 225 | 225 |
| Thickness Swell (max) | .087" | 15% | 15% | 15% |
| TOLERANCES | |
| Length & Width: (for each panel) | ± 1/16" |
| Squareness: (per 1 ft. of length) | ± 1/64" |
| Straightness: (per 2 ft. of length) | ± 1/64" |
| Thickness: (within panel) | ± 0.005" |
| Thickness: (panel to panel) | ± 0.005" |
Environmental
EMISSIONS
The Composite Panel Association (CPA) has certified the El Dorado, Arkansas, manufacturing facility of Del-Tin Fiber, LLC to be in compliance with the requirements of CPA ECC 4-11 for Eco-Certified Composites and the California Air Resources Board(CARB) Airborne Toxic Control Measure 93120.
Solidium MR/NAF is made using no-added formaldehyde based resins and exceeds the standards for CARB Phase 2 compliance. Our El Dorado facility is approved for NAF exemption N-13-082.
ECC Certification Standard
In addition, the Composite Panel Association has certified that Del-Tin Fiber, LLC has fulfilled the requirements of CPA ECC 4-11 for Eco-Certified Composites by demonstrating compliance to these four environmental criteria.
- Carbon Footprint – required each panel to demonstrate net carbon storage
- Local and Renewable Resource – requires high percentage use of local fiber
- Recycled/Recovered – requires high percentage use of recycled/recovered fiber
- Sustainability – requires low percentage of fiber furnish to enter waste stream
Review greater detail of the ECC standard and a link to the Del-Tin Fiber, LLC certificate on our ECC certification page.
ENVIRONMENTAL CREDITS
Solidium MR/NAF can also contribute toward credits in popular environmental certification programs such as LEED, Green Globes, NAHB and CARB. Visit our green contributions page for more information.

