The CD200 delivers proven fire-rated performance with 20-90 minute ratings while maintaining STC 32 acoustic control — exactly what Montana’s growing healthcare, education, and multi-family sectors demand. This isn’t trim-grade residential construction. The solid particle board core (ANSI A208.1 LD-1, optional LD-2) with bonded assembly creates doors that hold up to commercial abuse while meeting stringent fire codes and indoor air quality standards.
Fire Rating Performance That Matters
Fire ratings span from 20-minute up to 90-minute (in certain configurations), covering every commercial application from basic corridor doors to critical exit routes. Positive pressure rated up to 4’ x 9’ handles most standard commercial openings. Neutral pressure testing allows 3’ x 10’ or 4’ x 9’ — useful flexibility for taller openings in schools or healthcare facilities.
The testing credentials back up the ratings. Positive pressure testing meets UBC 7-2 1997, UL 10C, and NFPA 252. Neutral pressure follows UBC 7-4 1994 and UL 10B standards. These aren’t marketing claims — they’re third-party verified performance metrics that pass inspection.
For Montana contractors, the 20-minute rating covers basic code requirements for most interior corridor doors. Step up to 45-minute for stairwells and mechanical rooms. The 60 and 90-minute options handle elevator lobbies, exit corridors, and areas requiring maximum protection. Factory glazing must be performed under label service for fire-rated applications — don’t let anyone tell you field glazing maintains the rating.
Core Construction and Hardware Integration
The solid particle board core uses ANSI A208.1 LD-1 grade (optional LD-2 for higher density). This isn’t the flaky stuff from big-box shelving. Commercial-grade particle board provides consistent density for hardware mounting while maintaining fire resistance throughout the door thickness.
Bonded core assembly means stiles and rails are securely bonded to the core — no separation, no telegraphing, no warping from moisture differentials. Softwood stiles meet AWS Type A solid wood standards, giving you solid material where hinges and locksets mount. Rails use mill-option structural composite lumber (SCL), wood, or other composite material.
Hardware integration separates commercial doors from residential pretenders. Optional WDMA blocking (HB-1 through HB-8) accommodates heavy surface-applied hardware. With proper blocking specified, doors meet AWS Extra Heavy Duty rating — that’s continuous-use institutional hardware, not light-duty residential mortise locks.
Factory-machined hardware cutouts from manufacturer templates ensure precise fitting. No field boring that voids fire ratings. No guessing on backset or bore height. Submit your hardware schedule with shop drawings and get doors prepped exactly to spec.
Environmental Compliance for Modern Projects
Montana’s healthcare and education projects increasingly demand proven indoor air quality performance. The CD200 delivers with credentials that matter:
| Environmental Specification | Value | Source |
|---|---|---|
| VOC Emissions | ≤ 0.5 mg/m³ | CDPH/EHLB Standard Method v1.2-2017 |
| Formaldehyde | Type 1 adhesives with no added urea-formaldehyde | Manufacturer |
| Indoor Air Quality | SCS Indoor Advantage™ Gold (SCS-IAQ-08410) | Third-party |
| Regulatory Compliance | CARB Phase II compliant | Tested |
| Federal Standards | TSCA Title VI compliant | Tested |
SOR/2021-148 formaldehyde emissions compliance covers Canadian projects too — useful for contractors working both sides of the border near Eureka or Libby.
Technical Specifications
| Specification | Value |
|---|---|
| Core Material | Solid Particle Board (ANSI A208.1 LD-1, optional LD-2) |
| Face Options | HPVA Architectural ‘A’ Grade wood veneer (standard); ‘AA’ grade, paint-grade MDO, HDF (PC-3), or HPDL available |
| Thickness | 1-3/8” (35 mm), 1-3/4” (45 mm), optional up to 2-1/2” (57 mm) |
| Fire Ratings | 20, 45, 60, 90-minute (configuration dependent) |
| Acoustic Rating | STC 32 (ASTM E90-09, non-operable) |
| Maximum Size (Positive Pressure) | 4’ x 9’ (1219 mm x 2743 mm) |
| Maximum Size (Neutral Pressure) | 3’ x 10’ or 4’ x 9’ |
| Warranty | 5-year interior limited warranty |
The Bottom Line
The CD200 works for Montana’s light-to-moderate commercial projects — schools, medical offices, multi-family common areas. Moderate weight with higher rigidity and dimensional stability than hollow-core models means doors stay flat and operate smoothly through years of use. The fire ratings cover code requirements while STC 32 provides meaningful sound control between offices or patient rooms.
Compared to the hollow-core CD100, the CD200 offers significantly better rigidity, fire rating, and acoustic performance. It weighs less than the SCL-core CD350 while still delivering commercial-grade performance. For contractors who understand that door cores matter as much as face veneers, the CD200 delivers measurable value in fire safety, acoustic control, and long-term durability.
Frequently Asked Questions
What fire ratings does the CD200 offer? The CD200 provides 20, 45, 60, and 90-minute fire ratings (90-minute available in certain configurations). All ratings are tested to UBC, UL, and NFPA standards. Most corridor applications need 20-minute ratings, while stairwells typically require 45 or 60-minute protection.
How does the particle board core compare to other options? The solid particle board core (ANSI A208.1 LD-1) provides moderate weight with higher rigidity than hollow cores. It’s lighter than SCL cores but heavier than hollow cores, offering a practical balance for most commercial applications. For enhanced moisture tolerance, consider the CD250 with Ag-fiber core instead.
Can these doors accept heavy commercial hardware? Yes, with proper specification. WDMA blocking options HB-1 through HB-8 accommodate surface-applied hardware. When specified with appropriate blocking, doors meet AWS Extra Heavy Duty rating. Factory machining from manufacturer templates ensures precise cutouts.
What’s included with the door? The bonded and sanded door core assembly includes stiles, rails, and core. Factory-applied face veneers come in wood, MDO, HDF, or HPDL options. Optional blocking kits and factory-machined hardware cutouts are available when specified during ordering.
Do these doors meet indoor air quality standards? VOC emissions stay below 0.5 mg/m³ per CDPH/EHLB testing. Type 1 adhesives contain no added urea-formaldehyde. The doors carry SCS Indoor Advantage™ Gold certification and comply with CARB Phase II and TSCA Title VI standards.
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