What is the difference between tuck top and tuck front mailers?

Often used interchangeably, 'Roll End Tuck Top' (RETT) and 'Roll End Tuck Front' (RETF) typically refer to the same secure, self-locking style (FEFCO 0427). The lid has flaps that tuck into the double-wall front panel for a secure closure without tape.

What flute should I use for heavier items?

For heavier items or shipping protection, B-flute (approx. 1/8") is the standard choice. For smaller, lighter cosmetic or jewelry boxes where print quality is paramount, E-flute (approx. 1/16") offers a smoother surface and sleeker profile.

Can you add tear strips or return seals?

Yes. We can integrate adhesive tear strips for easy opening and a second adhesive strip for frustration-free customer returns, making your packaging e-commerce ready.

Which printing method is best: Direct Print or Litho Label?

Direct Flexo is cost-effective for simple logos and bold patterns on large volumes. Litho-labeling (laminating a printed sheet to the board) is best for photo-quality imagery, complex gradients, and premium retail presentation.

Roll End Tuck Top (RETT) / Tuck Front Mailers

The industry standard for secure subscription and e-commerce shipping.

Also known as:

Corrugated Mailer

Tab-Lock Mailer

REFT / RETF

FEFCO 0427

45+ Years Experience

Custom Solutions

Industry Leading

Roll End Tuck Top (RETT) mailer with roll-over front edge and tuck lid

What is a Roll End Tuck Top Box?

A Roll End Tuck Top (RETT), often called a Tuck Front Mailer or FEFCO 0427, is a one‑piece die‑cut box designed for durability and presentation. The side walls roll over to create a triple‑thickness front and side panels, providing exceptional crush resistance during shipping without the need for glue or tape.

Specs at a Glance

Flutes	E-Flute (Retail/Cosmetics), B-Flute (Standard Shipping), C-Flute (Heavy Items), F-Flute (Luxury/Micro-flute)
Top Sheet	Kraft (Brown) or White (Mottled/Kemi/Bleached)
Closure Style	Friction Lock or "Cherry Lock" (for extra security)
Dust Flaps	Included (Prevent dust entry & stabilize lid)
Print Options	Direct Flexo (1-3 colors), Digital (Full color), Litho-Label (Photo quality)
Add-ons	Tear strips, return adhesive seals, label placement guides, custom inserts

How to Measure a RETT/RETF Mailer

Getting the fit right is critical for product protection and shipping rates.

1Measure Internals: Always specify the exact size of the product + insert space (Length x Width x Depth).
2Account for Weight: Heavier products need thicker flutes (B or C), which affects the outer dimensions.
3Clearance: Leave 1/8" - 1/4" buffer for easy loading, especially if using foam inserts.
4Lid Fit: Decide if the lid should compress the contents (snug) or float (protect delicate tops).

Dimensional Diagram Placeholder

Comparison: RETN vs. Alternatives

Features	RETT / Mailer	RSC Shipper	Folding Carton
Primary Use	Subscription, E-comm, Presentation	Bulk Shipping, Warehousing	Retail Shelves (Lightweight)
Material	Corrugated (E, B Flute)	Corrugated (C, BC Flute)	Paperboard (SBS, CCNB)
Assembly	Self-locking (No Tape)	Requires Tape/Glue	Glue Tab (by manufacturer)
Unboxing Exp.	★★★★★ (Premium)	★★☆☆☆ (Utilitarian)	★★★★☆ (Retail Focus)
Protection	High (Double/Triple walls)	High (But less rigid corners)	Low (Need secondary shipper)

E-Commerce & Returns Readiness

Optimize your mailer for the loop economy. We can modify standard dielines to improve customer satisfaction and operational efficiency.

Tear StripsEasy-open perforations prevent box damage and frustration.
Return SealsAdd a second adhesive strip so customers can reseal the same box for returns.
Tamper EvidenceLocking tabs and security labels show if a package was opened en route.

Print That Performs: A Buyer's Guide

Direct Flexo

Ink printed directly on board. Cost-effective for high volumes.

Best for: Shipping logos, handling icons, rustic aesthetics.

Digital Print

CMYK direct-to-board. No plate fees, perfect for short runs.

Best for: Multi-SKU launches, proofs, intricate full-color art.

Litho-Label Wrap

Printed paper laminated to corrugate. Premium finish.

Best for: Photo-realistic branding, soft-touch finishes, luxury retail.

Pro Tip on Finishes: Matte finishes are elegant but can show scuffs in parcel networks.

Soft-Touch Warning: Feels premium but highly susceptible to conveyor belt friction. Use an outer shipper if chosen.

Common Industry Applications

Subscription & Influencer Kits

High-impact "unboxing" experiences. Often uses double-sided print (inside & out) and soft-touch finishes to build brand value immediately upon opening.

Electronics & Accessories

Requires durability and static control. Often pairs E-flute RETTs with conductive foam inserts or molded pulp trays for secure transit.

Cosmetics & Beauty

Small format E-flute boxes. Focus on high-end print finishes (foil hot stamping, spot UV) and precise dust flaps to keep product clean.

Sample Kits & Parts

Organizational focus. Uses internal dividers to present multiple small SKUs or parts neatly. excellent for B2B sales demos.

Frequently Asked Questions

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E-commerce Fulfillment Litho-Lamination

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Fast Turnaround

Standard production in 10-15 business days. Rush options available for urgent campaigns.