Loading...
Abstract washed white texture

Engineered Performance at the Core

DoorCoresforEveryApplication

From cost-effective particleboard to fire-rated mineral core, engineered structural composite lumber, and specialty cores, our doors are built to meet the unique demands of healthcare, education, hospitality, commercial, and institutional spaces. Durable, reliable, and purpose-built, each core delivers the right balance of strength, performance, and functionality. Explore our core options and choose the solution that fits your project perfectly.

ExtraHeavy-DutyParticleboard–Non-Rated

Extra Heavy-Duty Particleboard – Non-Rated

  • Higher density construction for increased strength

  • Enhanced screw-holding capability

  • Designed for high-traffic or abuse-prone environments

Extra heavy-duty particleboard cores are engineered for high-impact, high-traffic commercial and institutional environments where long-term durability is critical. The dense, reinforced particleboard construction enhances strength and screw-holding capability, while the core type directly influences structural performance, abuse resistance, and overall service life of the door assembly.

The table below outlines the key characteristics of extra heavy-duty particleboard to help guide specification decisions.

Attribute

Aspiro®

Model

A-PC-B-EHD-NR

Product Specification

Wood-based particleboard core

Typical Core Density

36-38 lbs./ft³ (577-609 kg/m³)

Door Thickness

1-3/4"

Maximum Size

Singles up to 4'0" x 10'0"
Pairs up to 8'0" x 9'0"

Fire Rating

Non-Rated and 20-Minute

Environmental Options

• TSCA Title VI / CARB Phase 2 compliant
• ULEF/NAUF upon request
• FSC® upon request

EPD

Yes

Quality Standards

• WDMA I.S. 1A Architectural Wood Flush Doors (Standard Construction)
• AWS available upon request

WDMA Performance Duty Level

Heavy-Duty

Door Weight

1-3/4" – 6.4 lbs./sf

ExtraHeavy-DutyParticleboard–20-MinuteFire-Rated

Extra Heavy-Duty Particleboard – 20-Minute Fire-Rated

  • Supports certified fire-rated door assemblies (when part of a tested assembly)

  • Higher density construction for increased strength and screw-holding capability

  • Suitable for commercial and institutional applications requiring fire protection

Fire-rated extra heavy-duty particleboard cores are engineered to support door assemblies that must meet stringent fire-resistance requirements while maintaining structural stability. The specially formulated particleboard core helps doors achieve certified fire ratings when used within a tested assembly, while also providing consistent density, reliable screw-holding capability, and dependable performance in commercial and institutional environments.

The table below outlines the key characteristics of extra heavy-duty particleboard to help guide specification decisions.

Series

Aspiro®

Cendura®

Model

A-PC-B-EHD-FR20

C-PC-B-EHD-FR20

Product Specification

Wood-based particleboard core

Typical Core Density

36-38 lbs./ft³ (577-609 kg/m3)

Door Thickness

1-3/4”

Maximum Size

Sizes shown below are for 1-3/4” thick doors. Contact sales for information regarding other door thickness types.

Singles up to 4’0” x 10’0”

Pairs up to 8’0” x 9’0”

Singles up to 4’0” x 9’0”

Pairs up to 8’0” x 9’0”

Fire Rating

20-Minute

Environmental Options

• TSCA Title VI / CARB Phase 2 compliant
• ULEF/NAUF upon request
• FSC® upon request

EPD

Yes

Quality Standards

• WDMA I.S. 1A Architectural Wood Flush Doors (Standard Construction)
• AWS available upon request

WDMA Performance Duty Level

Extra Heavy-Duty

Door Weight

1-3/4” – 8.0 lbs./sf

StructuredCompositeLumber–Non-Rated

Structured Composite Lumber – Non-Rated

  • Stronger and more impact-resistant

  • Excellent screw-holding performance

  • Ideal for high-traffic or heavy-use areas

Structured Composite Lumber (SCL) cores are designed for demanding commercial and institutional environments where enhanced strength and durability are required. Engineered wood strands are bonded together to create a dense, uniform core.

The table below outlines the key characteristics of structured composite lumber to help guide specification decisions.

Series

Aspiro®

Cendura®

Model

A-SCLC-B-NR

C-SCLC-B-NR

Product Specification

Structural Composite Lumber Core

Typical Core Density

~38 lbs./ft³ (609 kg/m³)

Door Thickness

1-3/8”, 1-3/4”, 2”, 2-1/4

1-3/8”, 1-3/4”

Maximum Size

Sizes shown below are for 1-3/4” thick doors. Contact sales for information regarding other door thickness types.

Singles up to 4’0” x 10’0”
Pairs up to 8’0” x 9’0”

Singles up to 4’0” x 9’0”
Pairs up to 8’0” x 9’0”

Fire Rating

Non-Rated

Environmental Options

• TSCA Title VI / CARB Phase 2 compliant
• ULEF/NAUF upon request
• FSC® upon request

EPD

Yes

Quality Standards

• WDMA I.S. 1A Architectural Wood Flush Doors (Standard Construction)
• AWS available upon request

WDMA Performance Duty Level

Extra Heavy-Duty

Door Weight

1-3/8” – 5.2 lbs./sf
1-3/4” – 6.5 lbs./sf

2” – 7.8 lbs./sf
2-1/4” – 8.8 lbs./sf

StructuredCompositeLumber–20-Minute

Structured Composite Lumber – 20-Minute

  • Dense, engineered structure for added strength and stability

  • Excellent screw-holding capability for hardware installation

  • Suitable for high-traffic commercial and institutional environments requiring fire protection

20-minute fire-rated Structured Composite Lumber (SCL) cores combine the strength of structured composite lumber with the ability to support fire-resistance requirements in door assemblies. Engineered wood strands are bonded together to create a dense, uniform core that provides enhanced structural integrity while enabling doors to achieve a 20-minute fire rating when used as part of a tested assembly.

The table below outlines the key characteristics of structured composite lumber to help guide specification decisions.

Series

Aspiro®

Cendura®

Model

A-SCLC-B-FR20

C-SCLC-B-FR20

Product Specification

Structural Composite Lumber Core

Typical Core Density

~38 lbs./ft³ (609 kg/m³)[MA1]

Door Thickness

1-3/8”, 1-3/4”, 2”, 2-1/4

1-3/8”, 1-3/4”

Maximum Size

Sizes shown below are for 1-3/4” thick doors. Contact sales for information regarding other door thickness types.

Singles up to 4’0” x 10’0”
Pairs up to 8’0” x 9’0”

Singles up to 4’0” x 9’0”
Pairs up to 8’0” x 9’0”

Fire Rating

20-Minute

Environmental Options

• TSCA Title VI / CARB Phase 2 compliant
• ULEF/NAUF upon request
• FSC® upon request

EPD

Yes

Quality Standards

• WDMA I.S. 1A Architectural Wood Flush Doors (Standard Construction)
• AWS available upon request

WDMA Performance Duty Level

Extra Heavy-Duty

Door Weight

1-3/8” – 5.2 lbs./sf
1-3/4” – 6.5 lbs./sf

2” – 7.8 lbs./sf
2-1/4” – 8.8 lbs./sf