Stay Flat Envelopes

Kraft Peel Strip Stay Flat 11" inside width, 13 1/2" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will...

Kraft Peel Strip Stay Flat 12 3/4" inside width, 15" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will...

Kraft Peel Strip Stay Flat 13" inside width, 18" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will not...

Kraft Peel Strip Stay Flat 17" inside width, 21" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will not...

Kraft Peel Strip Stay Flat 18" inside width, 24" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will not...

Kraft Peel Strip Stay Flat 20" inside width, 27" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will not...

Kraft Peel Strip Stay Flat 6" inside width, 6" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will not...

Kraft Peel Strip Stay Flat 6" inside width, 8" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will not...

Kraft Peel Strip Stay Flat 7" inside width, 9" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will not...

Kraft Peel Strip Stay Flat 9 3/4" inside width, 12 1/4" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed,...

Kraft Peel Strip Stay Flat 9" inside width, 11 1/2" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will...

Kraft Stay Flat Mailers 11" inside width, 13 1/2" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend...

Kraft Stay Flat Mailers 11" inside width, 16" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend or...

Kraft Stay Flat Mailers 12 3/4" inside width, 15" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend...

Kraft Stay Flat Mailers 13" inside width, 18" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend or...

Kraft Stay Flat Mailers 17" inside width, 21" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend or...

Kraft Stay Flat Mailers 18" inside width, 24" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend or...

Kraft Stay Flat Mailers 20" inside width, 27" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend or...

Kraft Stay Flat Mailers 6" inside width, 6" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend or...

Kraft Stay Flat Mailers 6" inside width, 8" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend or...

Kraft Stay Flat Mailers 7" inside width, 9" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend or...

Kraft Stay Flat Mailers 9 3/4" inside width, 12 1/4" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not...

Kraft Stay Flat Mailers 9" inside width, 11 1/2" inside length Our most durable heavy-duty mailers are constructed of rugged 0.037 pt. paperboard. No stiffeners are needed, will not bend...

White Peel Strip Stay Flat 11" inside width, 13 1/2" inside length Our most durable SEMI-GLOSS heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed,...

White Peel Strip Stay Flat 12 3/4" inside width, 15" inside length Our most durable SEMI-GLOSS heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed,...

White Peel Strip Stay Flat 13" inside width, 18" inside length Our most durable SEMI-GLOSS heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will...

White Peel Strip Stay Flat 17" inside width, 21" inside length Our most durable SEMI-GLOSS heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will...

White Peel Strip Stay Flat 18" inside width, 24" inside length Our most durable SEMI-GLOSS heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will...

White Peel Strip Stay Flat 5 1/8" inside width, 5 1/8" inside length Our most durable SEMI-GLOSS heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners...

White Peel Strip Stay Flat 6" inside width, 6" inside length Our most durable SEMI-GLOSS heavy-duty mailers are constructed of rugged 0.037 pt paperboard. No tape or stiffeners needed, will...