300 Packs 3.5x4.7 Inch Corrugated Cardboard Sheets, Premium White Corrugated Cardboard Inserts Bulk Flat for Sports Card Protectors, Trading Card Folders Mail Shipping Stiffeners

Thoughtful Design:Each high-quality cardboard sheet measures 4.7" x 3.5" (12cm x 9cm) with a 2mm thickness. Made from single-sided white corrugated cardboard, they are lightweight yet strong, adding minimal weight to your mailers while providing maximum structural support and protection.Applicable Occasions:Ideal for use as stiffeners in envelopes, dividers in storage boxes, backings for frames, or protective layers for shipping hose clamps and small hardware. These versatile cardboard inserts are perfect for DIY projects, small business shipping, and organizing collectibles.Specifications:Material: CardboardColor: WhiteSize: approx. 3.5 x 4.7 inchesPackage includes:300 Packs 3.5x4.7 Inch Corrugated Cardboard SheetsNotes:Manual measurement, please allow slight errors on size.The color may exist a slight difference due to different screen displays.

• 【Essential Trading Card Shipping Supplies】This 300-piece bulk pack of rigid cardboard sheets provides superior protection for your valuable collectibles. They are the perfect card shipping protector, effectively preventing bends, creases, and damage during transit, ensuring your cards arrive in pristine condition.
• 【Superior Ding Defend Protection】Constructed from durable 3-ply E-flute white cardboard, these sheets offer exceptional rigidity and crush resistance. The sturdy cardboard sheets act as a reliable shield against dings, impacts, and pressure, safeguarding sports cards, art prints, and delicate documents.
• 【Precise Dimensions & Premium Material】Each high-quality cardboard sheet measures 4.7" x 3.5" (12cm x 9cm) with a 2mm thickness. Made from single-sided white corrugated cardboard, they are lightweight yet strong, adding minimal weight to your mailers while providing maximum structural support and protection.
• 【Versatile for Multiple Uses】Ideal for use as stiffeners in envelopes, dividers in storage boxes, backings for frames, or protective layers for shipping hose clamps and small hardware. These versatile cardboard inserts are perfect for DIY projects, small business shipping, and organizing collectibles.
• 【Secure & Neat Packaging】Your 300 cardboard sheets arrive carefully stacked and securely packaged in a clear bag, not bound with damaging straps. This ensures every piece remains flat, undamaged, and ready for immediate use, offering great value and convenience for all your protective needs.