| A | Welded Seamless Edge Vertical stitch welds 3" OC, filled and finished smooth, seamless |
B | Continuous Welded Seamless Edge Continous vertical weld, finished smooth |
C | Hairline Seam Edge Center of door edge face |
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| D | Open Seam Edge Center of door edge face |
E | Air Tek Edge Seal Integral weather seal at door edge |
F | Hermetically Sealed Lab-Tek continuously welded all 4 edges, including top + bottom |
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