fasteners.
2.1.2.3
Panels
Modular message panels shall be provided in sizes shown on drawings.
Panels shall be fabricated a minimum of [[2.0] [2.3] [3.2] mm [0.080]
[0.090] [0.125] inch aluminum] [3.2 mm 0.125 inch acrylic] [3.2 mm 0.125
inch fiberglass reinforced plastic (FRP)]. [Panels shall be designed to be
interchangeable.] [Panels with metal return sheeting shall have welded
corners, ground smooth.] [Panels shall be heliarc welded to framing
system.] [Face panels shall be removable to provide access to electrical
components.]
2.1.2.4
Post finish shall be [semi-gloss baked enamel] [or] [two-component acrylic
polyurethane] [anodized conforming to AA DAF-45] [_____]. Metal panel
system finish shall be [baked enamel or two-component acrylic polyurethane]
[anodized conforming to AA DAF-45 [_____], as shown].
2.1.2.5
Mounting
[Permanent mounting shall be provided by embedding posts in concrete
foundation as shown.] [Removable mounting shall be provided by [[a steel]
[an aluminum]] [[sleeve] [flange]] embedded in concrete as shown.]
2.1.3
Changeable Letter Directories
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NOTE: The directories specified are standard
changeable-letter type. Message strip types are
also available. Cork board can be substituted for
molded backing to provide bulletin boards.
Lettering is available in sets of upper case, lower
case, and numerals or as individual characters.
Melamine plastic (MP) header plates are a tough
phenolic core material that is suitable for
non-direct sun exterior usage and is recommended for
raised lettering and braille.
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2.1.3.1
Frame and Trim
Aluminum alloy finish shall be [_____].
2.1.3.2
Header Plates
[Header plate shall consist of background metal matching frame and having
raised letters attached through the back.] [Header plate shall consist of
acrylic with raised acrylic letters.] [Header plate shall consist of MP
plastic with raised letters.]
2.1.3.3
Door Glazing
Door glazing shall be [clear safety or tempered glass minimum 6 mm 1/4 inch
thick.] [clear acrylic sheet 4.8 mm 3/16 inch thick.] [clear polycarbonate
sheet [4.8] [6.4] mm [3/16] [1/4] inch thick.]
SECTION 10430
Page 10
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