Shop › Extra White Envelopes Extra White Envelopes $0.50 Unbranded white envelopes for trading cards, in case you need more. 5” x 4.5”. Exact type may vary. Image is placeholder. Unbranded white envelopes for trading cards, in case you need more. 5” x 4.5”. Exact type may vary. Image is placeholder. Type: Triangle Flap Straight Flap Add To Cart Added!