Lynden Door StileLine Interior Doors

StileLine brings European-style asymmetrical wood veneer to the North American door market. The line features opposing-grain horizontal patterns with vertical stiles, creating a contemporary alternative to traditional panel doors. With four distinct construction series ranging from basic hollow core to lifetime-warranty architectural grade, contractors can match the door quality to project requirements and budgets.

Construction Series Hierarchy

The StileLine collection spans four construction tiers, each with distinct specifications and warranty coverage:

Construction Series	Core Type	Standards Met	Warranty
Architectural (LD)	Bonded sanded core	WDMA-1A, AWI, AWMAC Sec. 1300, WI Sec. 12	Lifetime limited
Commercial (CD)	Bonded sanded core with soft-wood edge stile	WDMA extra-heavy-duty	5-year limited
Interior Commercial (IC)	Bonded sanded core with residential/light-commercial face	Not specified	5-year limited
Standard Construction	Hollow core (H8/H4) or particleboard core (P8/P4)	Not specified	1-year limited

The Architectural series stands apart with its compliance to multiple industry standards. For multi-family developments or commercial projects where long-term performance matters, the jump to CD or IC series brings real durability gains over Standard Construction. A 20-minute fire-rated particleboard core option addresses code requirements for specific applications.

Design and Material Specifications

StileLine’s opposing-grain horizontal patterns with vertical stiles create visual depth absent from standard flush doors. The 6-inch wide vertical stile accommodates standard hardware placement — critical detail that prevents field modifications.

Wood veneer options include:

• African Mahogany (Quarter-sawn)
• White Maple (Plain-sliced)
• White Oak (Rift-cut)
• Black Walnut (Quarter-sawn)

Each door displays unique wood-grain patterns due to natural veneer — worth noting for projects requiring matched sets. The veneer cut methods (quarter-sawn, plain-sliced, rift-cut) affect grain appearance and should factor into specification decisions.

Dimension Type	Specifications
Thickness	1-3/8 inch, 1-3/4 inch
Standard Heights	6’8”, 7’0”, 8’0”
Maximum Size	Up to 4’ x 8’ (custom widths available by special order)
Trimming Limits	Up to 1 inch to 1-1/4 inch on each end (top and bottom rails are 2 inches wide)

Market Positioning and Applications

StileLine targets multi-family residential projects where developers seek differentiation without significantly increasing cost. This positioning makes sense — the asymmetrical design delivers visual interest that separates units from cookie-cutter competition.

Within Lynden Door’s own lineup, StileLine serves as a modernist alternative to traditional ‘Moulded’ or ‘FineLine’ collections. The line positions higher than ‘Prefinished Flush’ or ‘Hardboard’ doors but remains accessible for volume projects.

Key applications include:

• Commercial and institutional interiors including hotels, luxury spas, and healthcare facilities
• Custom residential homes for bedrooms, bathrooms, and hallways
• Sound-attenuated and fire-rated environments

Installation and Technical Considerations

StileLine doors require acclimatization to building heat and humidity prior to installation — standard practice but worth reinforcing with installers. The ability to trim up to 1 inch on top and bottom rails (which are 2 inches wide) provides field flexibility for uneven openings.

High-gloss finishes are not recommended. The ClearLine UV-cured factory finish releases no VOCs in the home and represents the manufacturer’s preferred option. The doors work in passage, bifold, pocket-door, and double-door configurations.

Environmental certifications include:

• CARB-compliant construction
• Compliance with WDMA, AWI, AWMAC, and WI standards (Architectural series)
• FSC and EPD sustainability documentation available

For Montana’s multi-family boom — particularly in markets like Bozeman and Missoula — StileLine addresses the need for differentiation without breaking development budgets. The four-tier construction system lets contractors match door grade to project type, from basic apartment conversions to upscale hospitality projects.

FAQ

What makes StileLine different from standard flush doors? The opposing-grain horizontal patterns with vertical stiles create an asymmetrical design inspired by European sketch-face doors. Standard flush doors show uniform grain direction.

Can StileLine doors be trimmed to fit? Yes, up to 1 inch can be trimmed from top and bottom. The 2-inch wide rails provide this trimming allowance.

Which construction series works for multi-family projects? For long-term multi-family developments, consider the Commercial (CD) or Interior Commercial (IC) series. Both carry 5-year limited warranties and feature bonded sanded cores that outlast basic hollow core construction.

Do the doors come pre-finished? Custom factory machining and finishing are available. The ClearLine factory finish option provides UV-cured, zero-VOC protection.

What’s the maximum door size available? Standard maximum is 4’ x 8’, with custom widths available by special order.