The 7" inner sleeves are white paper inner sleeves with a hole. The inner sleeves measure 7-1/8" x 7" (or 180.98mm x 177.8mm). The sleeves feature a 1/4" lip between the front and the back for easy machine insertion. The sleeves have square corners and are made from heavy-weight paper (20#). The paper used to make these is also certified by the Sustainable Forestry Initiative, and made with 30% post consumer waste. These sleeves are archival quality: acid free, and alkaline free! Great for replacing your worn out or torn inner sleeves and freshening up your collection.
The 7" outer sleeves are 7-7/16" x 7-1/4" (188.91mm x 184.15mm), 3 mil, and are made of high clarity, virgin 1st quality, archival quality polyethylene. All sleeves are flush cut at the top with slight lip for easier record insertion. These are the record industry's sleeve of choice - the thickness provides maximum protection for your record collection. If these hold up and protect a record when in the store, in many customers' hands, then they definitely will keep your collection pristine!
The 7" yellow flat record adapters easily snap into the center of your 7" record, allowing you to play them on almost any turntable!