Masonite Cheyenne Smooth 80″ Interior Door

The Masonite Cheyenne delivers what Montana contractors need most from an interior door — measurable sound control in the solid core version and bulletproof warranty protection when installed correctly. This 2-panel round-top design comes in both hollow core lightweight and solid core Safe ‘N Sound versions, with the solid core providing 70% more sound dampening than hollow core.

Sound Control and Core Options

The solid core Safe ‘N Sound option offers significantly better acoustics and durability than the hollow core version. That 70% improvement in sound dampening translates to real privacy between rooms — critical for multi-generational homes, home offices, and master suites adjacent to living areas. Weight ranges from approximately 25-50 pounds depending on size and core type.

The hollow core version serves budget-conscious projects where sound transmission isn’t critical — utility closets, pantries, or secondary bedrooms. But for any space where noise matters, the solid core earns its premium through genuine performance improvement.

Installation Specifications

Maximum trim allowance is 1/4” from any edge — exceeding this voids the warranty. That’s not a suggestion. Cut more than a quarter-inch and Masonite won’t honor any warranty claims. The warranty covers manufacturing defects but is voided if the door is trimmed more than 1/4” or if not properly sealed/primed on all 6 sides.

Specification	Value	Source
Heights Available	80”, 96”	(manufacturer)
Width Range (Passage)	12”-36” (13 sizes)	(manufacturer)
Width Range (Bifold)	18”-72” (9 sizes)	(manufacturer)
Thickness	1-3/8” (standard) or 1-3/4” (solid core/fire rated)	(manufacturer)
Maximum Trim	1/4” any edge	(manufacturer)
Core Options	Hollow or Solid (Safe ‘N Sound)	(manufacturer)

Prime and paint all six sides (top, bottom, both sides, and both faces) to ensure long-term stability. Montana’s dry winters and humid summers create wood movement. Skip sealing the top and bottom edges, and the door will warp within two heating seasons.

Fire Rating Capabilities

Fire Rating: 20-minute fire rating available for certain solid-core versions. Fire-rated versions come in 1-3/4” thickness with solid core construction required. That 20-minute rating meets code for specific applications like attached garage entries and mechanical room doors. The fire rating only applies to solid core versions — hollow core doors provide zero fire resistance.

Can also be purchased in ‘Pre-Hung’ configuration for easier installation. Pre-hung units eliminate the bore and mortise work but cost more upfront. For contractors doing volume work, slab doors make sense. For one-off replacements, pre-hung saves labor time.

Frequently Asked Questions

What’s the actual difference between hollow and solid core Cheyenne doors?

Solid core (Safe ‘N Sound) offers significantly better acoustics and durability. The 70% sound dampening improvement means conversations in adjacent rooms become background murmur instead of clear speech. Solid core doors also resist denting and feel substantial when closing.

Can these doors work for closets with bifold hardware?

Available in bifold, bypass, and pocket door configurations. Bifold widths include 18”, 24”, 28”, 30”, 32”, 36”, 48”, 60”, and 72”. The molded construction maintains consistency across all door types in a project.

What happens if I need to trim more than 1/4 inch?

Warranty is voided if the door is trimmed more than 1/4”. Order the correct size. If the rough opening is that far off, fix the framing rather than over-cutting the door. The engineered core can delaminate with excessive trimming.

Do fire-rated versions look different?

Fire-rated versions are thicker (1-3/4” vs 1-3/8”) but maintain the same face appearance. The extra thickness accommodates the denser core material required for the 20-minute rating. They’re heavier and require three hinges instead of two.

What’s the warranty coverage?

3-Year Limited Manufacturer’s Warranty covers manufacturing defects. Proper installation is critical — trim within limits and seal all six surfaces. Document your installation with photos showing the primer application on all edges.