Here is a little description about the Vertical Seam Fastener

Roofing Profiles

Panel Namesort descending Manufacturer Panel Width Panel Height
Cee-Lock Berridge 16 1/2" 1 1/2"
Clip Lock 100 Taylor Metals 12"to 19-3/4" 1" or 1-1/2"
Design Lok [now called Vertical Seam] Metal Sales 18" 1 3/4"
Design Span AEP 17" 1 3/4"
Dutch Seam ATAS 19 1/4" 1 1/2"
High Seam Fabral 18" 1 1/2"
Integral Panel Pac-Clad 18" 1 1/2"
Lokseam MBCI 12" or 16" or 18" 1 3/4"
Medallion-Loc McElroy 18" 1 3/4"
MRD194 ATAS 19 3/4" 1 1/2"
Redi-Roof Standing Seam Pac-Clad 18" 1 9/16"
S12-F MBCI 12" 1 5/8"
Series 1000 Nu-Ray Metals 20" 1 1/2"
SL-1750 Custom-Bilt 14" or 18" 1 3/4"
SLZ-1000 Snap-Lock Custom-Bilt 13" or 17" 1"
Snap-Clad Pac-Clad 18" 1 3/4"
Snap-Clad Solar Panel Pac-Clad 18" 1 3/4"
SSL Moran 18" 1 1/2"
SSR Fabral 16" 1 1/2"
Ultra Span Steelogic 18" 1 3/4"
Versa-Span Panel Taylor Metals 12"-14-5/8"-16"-18" 1-3/4"
Vertical Seam Metal Sales 18" 1 3/4"