These laser safe #10 window side seam envelopes with a blue security tint inside are an excellent choice if you're planning to run your envelopes through a desktop printer to add your own custom printing. The window is made of a special material that won't melt when subjected to the high temperatures found in typical laser printers.
|4 1/8 x 9 1/2 inches
|Thickness / Weight
|Tint / Lining
|1 1/8" x 4 1/2"
|7/8" from Left, 1/2" from Bottom