3 1/8" X 3 1/8" (79mm X 79mm)
(skirt incuse) JOHNS-MANVILLE {Pittsburg}
Picture courtesy Bob Berry |
U-241A: USA
3 1/8" X 3 1/8" (79mm X 79mm)
(skirt incuse) JOHNS-MANVILLE {Pittsburg}
Picture courtesy Bob Berry |
U number assignment by Jack Tod. Note previous assignment U-241C is merged with U-241A as a trimming variation.
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