Steel doors shall be manufactured by Mesker Door Inc., Huntsville, Alabama. Doors to be 14 Gauge or N Series Door series as shown on plans. Core material for doors to be urethane, polystyrene, honeycomb, or fiberboard as shown on plans.

N Series Door -- N Series Doors

Where 1 3/4 N Series Doors are indicated on plans, door construction shall be as follows: Doors shall be flush, constructed of two face sheets of 16, 18 or 20-gauge cold rolled steel, stretcher-leveled quality of flatness. Vertical edges of doors shall have neat hemmed edge seam mechanically interlocked for maximum structural integrity (seamless doors available when required by welding edge seam). All hinge reinforcements shall be 3/16 inch steel projection welded to door edge at three points above and 3 points below the hinge mortise. The top hinge reinforcement shall extend to the top of the door and have three extra projection welds on the extended leg.

14 Gauge Doors

Where 1 3/4 14 gauge doors are indicated on plans, door construction shall be as follows: Doors shall be flush, constructed of two face sheets of 14 gauge steel, stretcher-leveled quality of flatness. Vertical edges shall be ground and finished to give a smooth and invisible appearance (all doors are seamless). All hinge reinforcements shall be 3/16 inch steel projection welded to door edge at three points above and 3 points below the hinge mortise.

Both N Series Door and 14 Gauge Doors shall have 16 gauge top and bottom channels welded to door skins on 4 centers. All 1 3/4 doors shall have box type closer reinforcements factory installed to reinforce both sides of door. Standard hardware mortising for 1 3/4 doors shall be 4 1/2 x 4 1/2 template butt hinges (3 per door in 68, 70 and 72 and 4 on 710 and 80) and either government 86 or 161 series locksets. Doors shall be mortised, drilled and tapped for other mortised hardware as required and reinforced for surface applied hardware.

All 14 Gauge and N Series Doors to be non-handed with square edges. Doors shall be phosphatized inside and out and receive a factory coat of Prime Paint.

Government 86 lock reinforcements designed to be easily prepared for thru bolted trim.

Both series available with A60 Galvannealed face sheets.

Fire Rated Doors --Labeled Doors Sizes and Types

 
Special Notes
1. Astragals not required on pairs of doors for 1 1/2 hour applications.
2. All doors listed in pairs can be used with single point lock and automatic flush bolts or vertical rod and mortise panic devices.

Labeling Services

All labeled doors and frames are manufactured in strict accordance with the specifications and procedures of Underwriters Laboratories, Factory Mutual, and Warnock Hersey. Adherence to these procedures are monitored through periodic in-plant inspections.

Underwriters Label Service

Mesker manufactures a complete line of UL doors and frames that meets every requirement of fire protection. Doors are available in 1 3/4 thickness for A, B, C, D and E classifications. All UL label doors and frames are manufactured in strict accordance with the specifications and procedures of Underwriters Laboratories Inc. Adherence to these specifications and procedures is checked by UL through their in-plant inspection service.

Factory Mutual Service

The Mesker line of FM label doors and frames meet all rigid Factory Mutual regulations for testing quality and design. A network of Factory Mutual field inspectors provide up-to-date engineering data to maintain this service and provide maximum protection.

Warnock Hersey Service

Mesker Door is now listed with WHI to cover virtually all of your national labeling requirements. Warnock Hersey/Inchcape monitors adherence to their procedures by periodic in-plant inspections.

Certified Doors and Frames

Certified doors and frames available for areas where local codes permit their use in lieu of UL, FM or WHI classified products.