Gauge, glassine envelopes, hinges, corners, and triplets. 140+ Glassine Envelopes: Approx. 10-1/2"w x 4-1/2" h. 360+ Glassine Envelopes Approx. 5"w x 3-1/2"h. Loose Mounts - Approx. #20 3 (whole) + 4 Partial.
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