Lynden Door CD Series: Commercial-Grade Doors with Bevel-Groove Design

The Lynden Door CD Series delivers commercial-grade durability through MDF construction with distinctive bevel-grooved surfaces. Smooth, bevel-grooved MDF (Medium-Density Fiberboard) surface sets these doors apart from traditional raised-panel designs. The series targets Healthcare, Education, Retail, Office/Tenant Improvement applications where clean aesthetics meet demanding performance requirements.

Bevel-Groove Profile and Construction Details

The defining feature of the CD Series is its precision-machined groove profile. 0.22” wide and 0.04” deep bevel grooves create sharp architectural lines across the smooth MDF surface. This isn’t decorative trim slapped onto a flat door — it’s integral to the door face construction.

Provides a cleaner, more contemporary look with sharp beveled lines rather than raised panels. The smooth MDF surface takes paint beautifully, eliminating the grain telegraphing issues that plague natural wood doors in commercial settings.

Construction specs that matter for commercial installers:

Specification	Value
Stile Width	6-inch (accommodates standard door hardware)
Bottom Rail Height	10-inch tall (ADA compliant, allows for field trimming)
Trimming Allowance	Trimmable up to 1-inch on each end (top/bottom) thanks to wide rails
Thickness Options	1-3/8”, 1-3/4”

The 6-inch stiles mean standard mortise locks and continuous hinges fit without modification. The 10-inch bottom rail provides ADA clearance while leaving room for field adjustments. Designed with route lines positioned to avoid interference with standard hardware locations.

Core Options Drive Project Requirements

Core selection determines both cost and code compliance. The CD Series offers four distinct core configurations:

Hollow Core, Solid Core, Fire-Rated Core (20, 45, 60, 90-minute), Ventilated Core (for airflow)

Fire-rated options break down into specific categories: 20-minute Category A/B, 45-, 60-, 90-minute Category A. Category A ratings mean positive pressure testing — these doors maintain their rating even when installed in corridors with mechanical ventilation pushing against them.

The ventilated core option addresses a common commercial problem. Air flows in from one side, through the door core and out the opposing side — crucial for mechanical rooms, electrical closets, and spaces requiring passive airflow without compromising security.

For acoustic applications, Lab-tested baffling and resonators integrated into door core to block high and low frequency sound. MDF core provides comparable STC and fire-rating options to solid wood when specified.

Size availability covers standard commercial needs:

• Heights: 6’8”, 7’0”, 8’0”
• Widths: 2’0” to 4’0” (standard), up to 4’8” (special order)

Commercial Applications and Installation Reality

The CD Series targets specific commercial markets where durability trumps decorative appeal. Primary applications include Residential (Single-family, Multi-family, Hospitality), Commercial (Healthcare, Education, Retail, Office/Tenant Improvement), Accessibility-focused projects (ADA-compliant design).

In healthcare settings, the smooth MDF surface resists bacterial growth better than textured wood grain. Educational facilities appreciate the impact resistance — MDF doesn’t splinter like natural wood when abused by students. Multi-family developers get consistent appearance across hundreds of units without natural wood’s color and grain variations.

Compatible with standard interior door frames and standard door hardware. Can be configured as bifold doors. The bifold option opens up closet and room divider applications in hospitality and multi-family projects.

Lynden Door includes 1-Year Limited Interior Warranty coverage for manufacturing defects. That’s standard for commercial-grade interior doors — not impressive, but not a red flag either.

The CD Series fits within Lynden’s broader commercial door ecosystem. StileLine®, ReDiscovery, FineLine, wood veneers, Elemental, prefinished and primed hardboard door styles share compatible hardware prep and installation methods, simplifying mixed-specification projects.

For Montana’s commercial builders dealing with MDF core provides comparable STC and fire-rating options to solid wood when specified, the CD Series delivers needed performance without wood’s moisture movement issues. The bevel-groove design provides visual interest without the maintenance headaches of traditional raised panels. When projects demand clean lines, consistent appearance, and commercial-grade durability, the CD Series earns its specification.

Frequently Asked Questions

Q: What core options does the Lynden Door CD Series offer for fire-rated applications?

The Lynden Door CD Series offers fire-rated cores in 20-minute (Category A/B), 45-minute (Category A), 60-minute (Category A), and 90-minute (Category A) ratings. Category A ratings mean these doors maintain their fire rating even when installed in corridors with mechanical ventilation pushing against them.

Q: Can Lynden Door CD Series doors be trimmed to fit during installation?

Yes, CD Series doors can be trimmed up to 1-inch on each end (top/bottom) thanks to their 10-inch tall bottom rail design. The 6-inch stiles and wide rails allow for field adjustments while maintaining structural integrity and hardware compatibility.

Q: What’s the actual groove profile on the Lynden Door CD Series bevel design?

The Lynden Door CD Series features precision-machined grooves that are approximately 0.22 inches wide and 0.04 inches deep. These bevel grooves are integral to the smooth MDF door face, creating sharp architectural lines rather than traditional raised panels.

Q: Does the Lynden Door CD Series offer ventilated door options for mechanical rooms?

Yes, the CD Series includes a ventilated core option where air flows in from one side, through the door core and out the opposing side. This design provides passive airflow for mechanical rooms, electrical closets, and other spaces requiring ventilation without compromising security.

Q: What sizes are available in the Lynden Door CD Series?

The Lynden Door CD Series comes in standard heights of 6’8”, 7’0”, and 8’0”, with widths ranging from 2’0” to 4’0” as standard options. Special order sizes up to 4’8” wide are available, and doors come in both 1-3/8” and 1-3/4” thickness options.

Q: How does the Lynden Door CD Series handle sound control compared to solid wood doors?

The CD Series incorporates lab-tested baffling and resonators integrated into the door core to block high and low frequency sound. When properly specified, the MDF core provides comparable STC ratings to solid wood doors.