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amsi us175ls snap lock roof panel page header
amsi ultra seam us175ls lok seam roof panel

Our most popular panel profile, the Ultra Seam US175LS Lok Seam Roof Panel requires no special machinery to "snap" the panels together, yet is securely and continuously locked in place, completely concealing both clips and fasteners. Available in a various gauges of galvanized and galvalume coated steel, aluminum, copper, zinc and stainless steel. Also available with your choice of striations, stiffening beads, clip relief's and pencil ribs (pencil ribs not shown). Regardless of which material is selected, the optional stiffening ribs, pencil ribs or striations are highly recommended in order to reduce the slight surface waviness of the metal known as “oil-canning.” Note: “oil-canning” is a natural phenomenon inherent in sheet metal products and therefore is not cause for rejection of the material. Non-skinning butyl in-seam sealant available. UL rated when used with our 178-SLU-18 UL Classified roof panel clips!

UL 90 Rated ASTM E-1592  ASTM E-1680 ASTM E-1646

amsi ultra seam us175ls snaplock roof panel graphic
amsi snaplock roof panel picture
ULTRA SEAM US175LS ROOF PANEL
Table Provided for US175LS Panel General Reference Only. Loads are based on engineered calculations of the panel only. Allowable uniform load values based on three-span condition. For system requirements or design assistance please contact us.
Material
Gauge
Panel Width
Clip Spacing/Span Allowable Uniform Load (psf)
24"
30"
36"
42"
48"
54"
60"
Steel Grade D ASTM A653 (A446)
22
12"
446
286
198
145
111
87
70
22
16"
335
215
149
109
83
65
53
22
18"
298
191
132
97
74
58
47
Steel Grade D ASTM A653 (A446)
24
12"
339
217
151
110
84
66
53
24
16"
254
163
113
83
63
50
40
24
18"
226
145
100
73
56
44
35
Aluminum Alloy 3004 H34
.040"
12"
152
97
67
49
37
29
24
.040"
 16"
109
70
48
35
27
21
17
Aluminum Alloy 3004 H34 .032" 12"
98
62
43
31
24
19
15
.032" 16"
70
45
31
23
17
13
11
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