The paper box were easy to assemble and the boxes were sturdy enough for your usage. The boxes are fairly thin on their own, these work fine as long as you put padding inside boxes. The cardboard is very sturdy and they are versatile with the ability to vary the thickness of the box.

30 Corrugated Shipping Boxes Highest Quality and Value 6″ x 4″ x 2″ (L x W x H) Product Specifications: Dimensions: 6″ x 4″ x 2″ Quantity: 30 Additional Details: 200-LB Single Wall Corrugated 23-LB Edge Crush Test (ECT) Extremely lightweight material helps save on postage High strength seams for maximum protection Surface easily accepts ink, stamps, and labels Approved for USPS, FedEx, UPS, and DHL Retail Price: $30

Corrugated Boxes Best Available. Corrugated Boxes. Best Available. Boxes are manufactured from ECT-32 kraft corrugated. Corrugated Boxes. Corrugated boxes are recyclable. Manufactured from 200#/ECT-32 Kraft corrugated (unless otherwise noted).

✅Material: StrongB flute, 3-ply corrugated cardboard (2.5–3mm thickness).

BRAND NEW – 30 DAY RETURN POLICY. HASSLE FREE RETURNS. 8 x 6 x 4″ Lightweight 32 ECT Corrugated Boxes 32 ECT: Recommended by UPS for shipping up to 30 lbs.32-LB Edge Crush Test (ECT)Extremely lightweight material helps save on postageHigh strength seams for maximum protectionSurface easily accepts ink, stamps, and labelsApproved for USPS, FedEx, UPS, and DHL