MODEL CFD 7: MINERAL CORE
A rugged construction consisting of 3 ply hardwood doorskins permanently bonded to frame and core. The modulus of rupture and elasticity of the premium core is much higher than competitive products providing less breakage during manufacturing. The weight of this premium core is lighter than competitive products allowing for more units per shipment.
Premium Grade conforming to or exceeding WDMA Industry Standard I.S. 1-A and Architectural Woodwork Institute Standards for type FD 7 as tested per A.S.T.M. E-152 “Fire Test of Door Assemblies” performed by Warnock Hersey International.
Single Door 4/0 wide,
Pairs 4/0 wide, 9/0 high,
Double Egress 4/0 wide,
8/0 high, (8/0x8/0 opening)
Stiles - (Before Trim or Prefit)*
Treated maple for 45 and 60 minutes, laminated maple for 90 minute, bonded to the core. All are available veneered to match the face.
Rails - (Before Trim or Prefit)* Treated maple. Bonded to the core.
The purpose of inner Blocking is to attach surface mounted hardware and exit devices with screws, therefore eliminating through bolts on 45, 60, and 90 minute doors.
Mineral Core is an asbestos-free, mineral-based product that meets the criteria for 45, 60, and 90 minute fire rated doors. The manufacturing of the fire door core is accomplished with a proprietary process developed by the manufacturer. The premium core is unique in regard to weight and strength properties.
1/8" 3 ply plywood meeting AWI or WDMA grading rules as specified. Type I or II bond as specified.
Core and frame are uniformly sized to a thickness of 1-1/2" (±.015"). Core and frame components are assembled to meet or exceed fire rating specifications.
Type I or Type II bond, by specification, between faces and core/frame components.
Lifetime from date of manufacture. For original installation only.
Extra heavy duty available.
May be labeled and classified by Warnock Hersey International or Underwriters Laboratories as 45-60-90 minute rating. Doors are capable of meeting the requirements for both positive and neutral pressure fire tests, including UBC 7-2 (1997),
UL 10C(1998), NFPA 252 (1995), ASTM E-152 (1982), and UL 10B (1997), including the hose stream. Restrictions on machining and architectural accessories or application are per the governing authority.
Exterior application of this product is Not Warranted.
FIRE RATED ALTERNATIVES:
Agrifiber, a wheat or flax based core, can be constructed to meet the criteria for 45 and 60 minute fire rated doors. The Agrifiber core allows greater compliance with LEED-base requirements and provides an option to mineral based products. Contact the factory for details.
* Fire labeled doors may not be refit in the field if already factory prefit sized. If not factory prefit for length, maximum field trim is 3/4" from the bottom only per NFPA-80, 1986, Fire Doors, Chapter 1-3.5