LD4500 - 45 Minute Rated Mineral Core

Architectural Door (LD) Series

APPLICATIONS & BENEFITS

Recommended for Architectural applications that require a fortyfive-minute fire-rated door. Available in a wide variety of hardwood, hardboard, and plastic laminate faces.

SPECIFICATIONS Please see PDF links below.

MAXIMUM SIZE
Single doors 4'0" x 10'0"
Maximum size door/transom 4'0" x 10'0"
Paired Doors: Dependent on blocking and hardware preps. 8'0" x 9'0"
Call Lynden Door, Inc. for further information.

DOOR THICKNESS
1 3/4" standard.

STILES
Untreated solid hardwood stiles matching (compatible with) the face veneer. Minimum 11/16", maximum 7/8" (after trim). Minimum dimensions are net after factory undersizing.

RAILS
Untreated softwood rails. Top rail: Minimum 5/8", maximum 7/8". Bottom rail: Minimum 3/4", maximum 1 7/8" (after trim). Matching (compatible) rails available upon request. Minimum dimensions are after factory undersizing.

BONDED CORE AND FRAME ASSEMBLY
Georgia Pacific forty-five minute mineral core with the stiles bonded to the core and the stiles and rails bonded together.

FACES
Pregraded: Hardboard, Medium Density Overlay, Premium 3-ply veneered skins (minimum 1/50" veneer before sanding), or Plastic Laminate (overlaid on a sanded hardboard substrate). Veneers available in a wide variety of species and cuts.

ADHESIVES
Core and frame assembly and veneer application all with Type 1, waterproof adhesives.

BLOCKING
Special inner blocking options may be specified for reinforcing of hardware, including lockblocks.

FACTORY MACHINING/DETAILING
Complete range of machining capabilities and detailing available. Rated doors must be in accordance with Warnock Hersey International, Inc. and National Fire Protection Association Standards (NFPA 80, latest edition). Lynden Door, Inc. recommends factory prefitting on all fire doors.

LIGHT OPENINGS
Cut-out area may not exceed 40% of the face or half of the door height to comply with the warranty. For forty-five-minute rated doors, the total visible area of single or multiple lights may not exceed 1296 sq. in. per leaf, with a maximum width of 36", or a maximum height of 54". All cut-outs must be 6" from the edge of the door or any other cutouts and/or hardware preps, with a minimum bottom rail of 10".

WARRANTY
The life of the original installation for interior use only. See warranty terms and conditions. Use of Lynden Door, Inc. LD4500 doors in exterior applications is neither recommended nor warranted.

NOTE
All Lynden Door, Inc. doors meet or exceed W.D.M.A.I.S.1A standards.