Protect your records with 4 mil polyethylene outer sleeves built for maximum durability and long-term storage. These heavy-duty sleeves are designed for collectors, record stores, and Discogs sellers who need stronger protection than standard 3 mil sleeves. Ideal for 12” LPs, double LPs, and most gatefold jackets—especially for higher-value records and shipping. Best for: higher-value records, shipping protection, and long-term storage. Looking for a more flexible option? Shop our 3 mil vinyl record outer sleeves for everyday use. Available in 50, 100, 500, and 1,000 count packs.Manufactured and shipped from St. Louis, MO. QUICK FEATURES ✔ True 4 Mil Thickness — Heavy-duty protection✔ Acid-Free — Safe for long-term storage✔ Clear — Keeps artwork and spines visible✔ Fits 12” LPs, Gatefolds & Double LPs✔ Rigid Structure — Added protection for storage and shipping✔ Manufactured and shipped from St. Louis, MO✔ Bulk Options — 50 / 100 / 500 / 1,000 count PRODUCT DETAILS Our 4 mil outer sleeves provide a thicker, more rigid barrier against dust, scuffs, and handling wear—ideal for protecting higher-value records and maintaining condition over time. Each sleeve measures 12.75" x 12.75", offering a proper fit for standard LPs, including most gatefold and double LP jackets, while maintaining structure and protection. Slides easily over jackets without bending or forcing. Used by collectors and record stores for protecting valuable records during storage and shipping. CHOOSE YOUR QUANTITY 50 Count — Retail Pack100 Count — Retail Pack500 Count — Bulk Pack1,000 Count — Bulk Box WHO THESE ARE FOR Record stores are protecting higher-value inventoryDiscogs and eBay sellers are shipping valuable recordsVinyl collectors preserving condition long-termHigh-volume resellers needing durable protection 4 MIL VS 3 MIL SLEEVES Feature 4 Mil Sleeves 3 Mil Sleeves Thickness Heavier-duty Standard protection Flexibility More rigid More flexible Best Use Higher-value records, shipping, long-term storage Everyday use and handling WHY BUY FROM US At Music Record Shop, we handle vinyl inventory every day. These sleeves are selected based on real use—ensuring consistent quality, fit, and protection. Manufactured and shipped from St. Louis, MOUsed daily in real inventory workflowsConsistent quality across every orderReliable supply for repeat buyersShips securely to prevent damage in transit FAQ What are 4 mil outer sleeves?4 mil outer sleeves are thicker polyethylene sleeves designed for maximum protection of vinyl records. Do these sleeves fit gatefold or double LPs?Yes, they fit standard 12” LPs, including most gatefold and double LP jackets. Are these good for shipping records?Yes—4 mil sleeves provide added rigidity and protection, making them ideal for shipping higher-value records. What’s the difference between 3 mil and 4 mil sleeves?4 mil sleeves are thicker and more rigid, offering increased protection, while 3 mil sleeves are more flexible for everyday use. Where are these sleeves manufactured?These sleeves are manufactured and shipped from St. Louis, MO. Do you offer bulk options?Yes—500 and 1,000 count options are available for bulk buyers.