#3 Glassine Envelopes
2 1/2″ x 4 1/4″
The #3 Glassine envelopes are ideal to use when collecting, storing or shipping medium-sized butterflies like Gulf Fritillaries or Mourning Cloaks. Our glassine envelopes are sold in units of 500. All butterflies should be placed in the envelope with their wings folded closed in resting position.