No 10 (4-1/8-x-9-1/2) - in GSM / Basis Wt: 118 GSM (32/80lb Text); Finish Appearance: Super Smooth - Letter envelope choices are here

#10 Square Flap Envelopes (4.125 x 9.5) - Classic CREST Solar White (80T/Super Smooth) 2500 PK
NE-CC-7470800-C
PR

$520.00
#10 WINDOW Envelopes (4.125 x 9.5) - Classic CREST Solar White (80T/Super Smooth) 2500 PK
NE-CC-7535200-C
PR

$504.15
#10 PS (Peel to Seal) Envelopes (4.125 x 9.5) - Classic CREST Solar White (80T/Super Smooth) 2500 PK
NE-CC-7500900-C
PR

$783.90
#10 Policy Envelopes (4.125 x 9.5) - Classic CREST Solar White (80T/Super Smooth) 2500 PK
NE-CC-7571600-C
PR

$862.90
#10 Commercial Envelopes (4.125 x 9.5) - Classic CREST Solar White (80T/Super Smooth) 2500 PK
NE-CC-7453700-C
PR

$473.50