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peci cation G
ENERAL
:
Frames support lead lined doors and provide a
lead lined interface between the door and the
lead lined drywall in the adjacent walls.
They are attached to the walls using a variety of
techniques designed to hold the door securely
and to prevent shielding leaks.
Frames are available in fully-welded form and
can also be obtained in knock down (KD) form.
P
RODUCT
D
ETAILS
:
Frames shall be manufactured from cold rolled
steel per ASTM A568 and ASTM A366 in 16
gage. Frames are normally set up and welded
type units for maximum support.
Frames shall have 2" faces, with a 1/2" masonry
pro le return. Wall fasteners of the proper type
shall be provided for labeled frames. Frames are
sized to match any available door dimensions.

All joints shall be die mitered with integral tabs
for interlocking and reinforcement of the jambs
to the head and to ease welding. All frames shall
receive a factory coat of rust inhibitive primer.
Frames are to be mortised, reinforced and
drilled and tapped for all mortise nish hardware.
Frames are to be reinforced only for surface
mounted hardware, with drilling and tapping to
be done in the eld by the installing contractor.
Unpierced sheet lead of speci ed thickness is
shaped to t the frame contour and inserted in
the frame. Lead joints are overlapped to ensure
continuity of shielding and secured in place with
welded clips. Lead is dressed around mortised
hardware preps.
HARDWARE - Hardware selection is critical to
installation success. High door weights involved
require special consideration in hardware selec-
tion, especially in hinge systems. Either pivot or
continuous type hinges are designed to carry
the door weights.
Door hardware will normally be supplied by
others and may require lead lining equal to the
lining in the door and frame assembly. Care
must be taken when eld installing hardware to
avoid disturbing existing frame lining. A heavy
duty lead lined closer is recommended to control
door inertia.
E
XECUTION
:
INSTALLATION - Each frame should be in-
stalled in accordance with DHI recommenda-
tions for frame installation, with special care re-
quired due to high door weights involved. Frame
must be plumb and square in the opening and
securely fastened in place.
The lead in the walls must be overlapped with
the lead lined frame to ensure shielding overlap.
SWING - The extent of the shielding in a frame
is determined by the door swing. If the door
swings away from the shielded wall of the room,
the frame is to be fully shielded.
Frames for doors swinging toward the shielded
wall are lined from the return on the shielded
side down into the stop.
WASTE - Dispose of all scrap lead in an envi-
ronmentally responsible manner.
A&L Shielding's hollow metal door frames are designed with various levels of shielding protection and can be
prepared for a wide variety of door hardware
S
peci cation


Lead Lined Welded Hollow Metal Door Frames
Door Frames - welded
268 Old Lindale Road
Rome, Georgia 30161
Phone Toll Free: 800-329-5323
Fax Toll Free:
800-329-5320
e-mail:
alshield@alshielding.com
Internet:
www.alshielding.com
01/08