
Telescoping Boxes
- 2-piece adjustable telescoping design
- Heavy-duty 200#/ECT-32 kraft corrugated
- F.O.L. bottom for added structural strength
ASTM D5118 Certified
ASTM D4727 Certified
CSA Class Code A Certified
Corrugated Boxes 4 x 4 x 48 are long, narrow shipping boxes designed for oversized and elongated items. Available in single-wall and telescoping 2-piece configurations, they are built from 200#/ECT-32 kraft corrugated for superior strength, serving e-commerce, industrial, and specialty shipping needs.




A 4 x 4 x 48 box refers to a corrugated shipping box with inside dimensions of 4 inches wide, 4 inches deep, and 48 inches long. This long, narrow configuration is ideal for shipping elongated items such as fishing rods, curtain rods, posters, banners, and similar products that do not fit in standard square boxes.
Talk to our experts for custom solutions and tailored guidance.

Ideal for fulfilling oversized, elongated product orders where standard box sizes fall short.

Protects fishing rods, golf clubs, and sports equipment during shipping and retail distribution.

Used for packaging pipes, rods, and elongated components in industrial and commercial operations.

Provides reliable protection for curtain rods, artwork, and long household items during moves.
Talk to our experts for custom solutions and tailored guidance.
With over 1,300 sizes including hard-to-find configurations, you will always find the exact box you need without compromise.
All boxes meet ASTM D5118, ASTM D4727, and WRA/MPA standards, ensuring your shipments arrive protected and compliant every time.
From government-spec corrugated to custom printed cartons, Cardboard Boxes 4 U delivers packaging beyond standard off-the-shelf options.
Submit your requirements and our team will respond with pricing, availability, and custom size options tailored to your shipping needs.
To help us assist you faster, please include the reason for your message so the relevant team can reach out as soon as possible.
To help us assist you faster, please include the reason for your message so the relevant team can reach out as soon as possible.