What is a Baronial Envelope?

The Baronial Envelope's triangular pointed flap is considered appropriate for both social and commercial applications,
while the straight flap in the same sizes is considered casual and more fitting for commercial use. 

Most common baronial sizes:

No. 4 Baronial (4 bar)
3.625" x 5.125"  |  92mm x 130mm

No. 5.5 Baronial (5.5 bar)
4.375" x 5.75"  |  111mm x 146mm

No. 6 Baronial (6 bar)
4.75" x 5.5"  |  121mm x 165mm

Lee Inner (ungummed)
5.25" x 7.25"  |  133mm x 177mm

Lee Mailing
5.5" x 7.5"  |  140mm x 190mm

Other sizes exist. Ask your stationer to clarify envelope size before assuming your envelope
will be created to the common standard.