Columbian No. 9 Poly-Klear Window Envelopes

See-through window eliminates the need to address the No. 9 envelope. 1-1/8" x 4-1/2" window is positioned 7/8" from the left and 1/2" from the bottom. Envelopes feature 24 lb., white wove paper with diagonal seams.

Columbian No. 9 Poly-Klear Window Envelopes - Single Window - #9 - 3 53/64" Width x 8 53/64" Length - 24 lb - Wove - 500 / Box - White