I like Bags Unlimited and have been using their products for decades.
They do offer archival grade products as well:
On Tue, Aug 17, 2010 at 10:49 AM, Trey Bunn <[log in to unmask]> wrote:
> Can someone recommend a supplier for archival (acid free) record
> sleeves? We need both 7" and 12" sizes, preferably without the round
> hole cut in the side. The ones that were ordered here most recently
> tend to shed little bits of cardboard along the edges of the cut,
> which then get onto the record.
> Trey Bunn
> Audiovisual Conservator
> Emory University Libraries
> Preservation Office
> Atlanta, GA
Laura L. Moody