Lynden Door H8 (Hollow 1-3/8″) Standard Construction

The Lynden Door H8 delivers professional-grade quality at builder-grade pricing. This hollow core interior door weighs just 21 pounds for a 24x80 slab — light enough for one person to handle comfortably, yet built with the material options and environmental certifications that matter to Montana contractors. At 32 pounds for the 36x80 size, it’s the door that doesn’t fight back during installation.

Weight and Installation Efficiency

The H8’s weight specs change the installation game. A standard 24x80 slab weighs 21 pounds. Move up to 36x80 and you’re handling 32 pounds. Compare that to solid core alternatives pushing 50-70 pounds — your crew saves their backs and speeds through multi-unit projects.

The door comes with a 3-degree bevel on one side for passage doors, eliminating the field beveling that slows down installation. One side is beveled 3 degrees right from the factory. The lightweight construction makes for easy handling and operation.

Reviews on retailer sites emphasize the lightweight nature. Users specifically note they’re “Easy to hang due to low weight.” That’s not marketing fluff — that’s contractors voting with their reviews after actual installations.

Material Options and Finishes

The H8 platform offers five distinct face materials:

Face Material	Application
Wood veneers (various species)	Natural wood look, stain-grade projects
Molded profiles (smooth or embossed)	Paint-grade, textured options
Pre-finished and primed hardboard	Ready-to-install, minimal finishing
High Pressure Decorative Laminate (HPDL)	Commercial durability, maintenance-free
Paint grade MDO	Smooth paint finish, no grain telegraphing

Custom factory stain and paint options are available, which means less time spraying doors on-site. Pre-finished options (like Albany Maple) save time and labor — contractors specifically call this out as a major advantage.

The construction uses Fiber (MDF) or Fingerjoint wood edges for the stiles and rails. MDF edges take paint uniformly without the grain raise you get with solid wood. Fingerjoint offers better screw-holding for heavy hardware.

Environmental Compliance and Size Flexibility

The H8 meets three critical environmental standards:

• CARB Phase II (California Air Resources Board)
• TSCA Title VI (Toxic Substances Control Act)
• SOR/2021-148 (Canadian Formaldehyde Emissions)

These aren’t optional certifications anymore. Montana’s growing focus on healthy indoor air quality makes CARB Phase II compliance essential for multi-family projects and any builder targeting environmentally conscious buyers.

Standard sizing covers the real-world needs:

Dimension	Available Sizes
Width	24”, 28”, 30”, 32”, 36”
Height	80”, 84”, 96”
Thickness	1-3/8 inches (35mm)

The 96-inch height option matters for modern construction with higher ceilings. No custom ordering, no delays — stock sizes handle everything from tight powder rooms to grand master suites.

Installation and Storage Requirements

Store flat in a dry, clean, well-ventilated environment. Use a vapor barrier if stored before finishing. Montana’s humidity swings demand proper storage — these doors won’t tolerate being leaned against a garage wall through spring thaw.

Hinge and bore prep usually required (often sold as slabs). That’s standard for the industry, but worth noting for contractors used to prehung units.

The critical requirement: Must seal all six sides (top, bottom, both faces, both edges). Sand and clean between coats. Follow manufacturer instructions for paint/stain drying times. Skip this step and the warranty’s void. More importantly, unsealed edges absorb moisture and the door warps.

The Bottom Line

Typically viewed as a reliable ‘builder-grade’ option, the H8 transcends that label through smart engineering. Durable enough for standard interior use but lacks the heft of solid core doors — and that’s exactly the point. Not every door needs to feel like a bank vault.

The 1-Year Interior Limited Warranty covers manufacturing defects under normal use conditions. Requires proper storage and finishing (sealing all edges) to maintain validity. Standard warranty for standard construction — no surprises there.

For Montana contractors handling production builds, apartment complexes, or value-engineered custom homes, the H8 delivers. The five face material options mean you’re not switching suppliers when the architect changes their mind. The weight specs mean your crew stays productive. The environmental certifications mean you’re covered for any project requirement.

FAQs

Q: How much lighter is the H8 compared to solid core doors? The H8 weighs 21 pounds for a 24x80 slab and 32 pounds for 36x80. Solid core doors in the same sizes typically weigh 50-70 pounds — roughly 2-3 times heavier. The weight difference speeds installation and reduces worker fatigue on multi-door projects.

Q: What hardware works with the H8? The H8 is compatible with standard wood, MDF, and steel interior door frames. It supports standard interior locksets (2-1/8” bore) and 3-1/2” to 4” hinges. No special hardware required — use your standard residential locksets and hinges.

Q: Can I get these doors pre-finished from the factory? Yes. Custom factory stain and paint options are available. The pre-finished hardboard option comes ready to install. Pre-finished options (like Albany Maple) save time and labor according to contractor reviews.

Q: Do I need to seal all edges even on pre-finished doors? Must seal all six sides (top, bottom, both faces, both edges) regardless of the face finish. This requirement maintains the warranty and prevents moisture absorption that causes warping.

Q: What’s the actual thickness of these doors? 1-3/8 inches (35mm) — standard interior door thickness that fits typical residential door frames and hardware.