Masonite Flush Series - Primed 80″

Masonite’s Flush Series offers contractors 7 width options from 18-36 inches with both hollow and solid core configurations. The smooth, pre-primed surface eliminates panel lines for a contemporary look that works in modern homes or commercial spaces.

Core Type Selection

The difference between hollow and solid core matters more than most contractors explain to homeowners. Solid core provides superior sound reduction (Privacy Level 10/10) — worth every penny for bedrooms, home offices, or any room where phone calls happen. Hollow core is lightweight and cost-effective, perfect for closets, pantries, and spaces where sound transmission isn’t an issue.

20-minute fire rating (Solid Core variations) adds another reason to spec solid core between attached garages and living spaces. That fire rating isn’t just code compliance — it’s real protection that hollow core can’t provide.

Core Type	Sound Rating	Weight	Fire Rating	Best Application
Solid Core	Privacy Level 10/10	Heavier	20-minute available	Bedrooms, offices, garage entries
Hollow Core	Lower	Lightweight	None	Closets, pantries, low-traffic areas

The weight difference shows up during installation. Hollow core doors hang easier, especially when you’re working alone. But that lightweight feel translates to a cheaper feel once installed — something reviewers mention as “light/flimsy”.

Width Options and Installation

Seven standard widths: 18, 24, 28, 30, 32, 34, 36 inches. All doors 80” height x 1.375” thickness. This range covers everything from narrow bathroom entries to wider accessibility openings. The 1.375” thickness matches standard interior hardware — no special ordering required.

Width	Common Application
18”	Linen closets, narrow utility
24”	Small bathrooms, pantries
28”-30”	Standard bedrooms
32”-36”	Master bedrooms, accessibility

Maximum 1/2 inch from the bottom; excessive trimming voids warranty. That’s not much adjustment room — measure twice before ordering. Slab only (requires manual hinge routing); standard placement 5-7 inches from top, 10-11 inches from bottom. These arrive as blank slabs. Factor in hinge mortising time and hardware boring.

Finish Options

The pre-primed smooth white surface is ready for paint, saving prep time on-site. But “priming quality can be inconsistent” according to user reviews. Check each door before accepting delivery — some need additional primer coats for professional results.

Veneer options include Oak, Birch, and Hardwood for projects wanting natural wood appearance. The veneer versions accept stain, offering flexibility beyond the basic primed option.

The Verdict

Worth speccing for multi-family projects where you need consistent sizing across dozens of openings. The seven width options from 18-36 inches mean fewer custom orders and faster installation. The 4.2 star average rating across 150 reviews reflects solid performance.

Skip them for high-end custom homes where clients expect weightier doors. The hollow core option especially feels budget-grade once installed. For tract homes, apartments, and commercial interiors where function beats luxury, they deliver exactly what’s needed.

Frequently Asked Questions

Can these doors be trimmed to fit? Maximum 1/2 inch from the bottom; excessive trimming voids warranty. That’s barely enough to account for carpet thickness. Order the right height initially.

What certifications do these doors carry? CARB Phase 2 compliant (on most models), SCS Global Indoor Air Quality (Low VOC) certified, FSC certified materials available upon request/region. The certifications matter for commercial projects and green building programs.

Do solid core doors really reduce sound that much? Solid core provides Privacy Level 10/10 for sound reduction. The difference between hollow and solid core is immediately noticeable — especially in homes with kids or home offices.

What warranty coverage comes with these doors? 1-year limited (Hollow Core), up to 5-7 years limited (Solid Core depending on retailer/region). Coverage: Covers manufacturing defects and workmanship under normal use. The extended solid core warranty reflects the superior construction.