I made my own invitations and have a lot of left over envelopes. They are bright white. I used 2 sizes, one for the invitation itself and one for the response card.
133 A-6 size (4 3/4 X 6 1/2)
133 A-1size (3 5/8 X 5 1/8)
I will accept any reasonable offer. They were around $75 for two boxes of 250 each which didnt include the shipping.
email me: andreaerutledge@gmail.com