13x18 Self-Seal Chipboard Stayflats Mailers 100/Case RM18SS
$114.06
/ case of 100$1.14 per mailer
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
13" × 18"
Board / material
.020 Chipboard
Color
White
Freight class
Class 60
Specifications
| Inside dimensions | 13" × 18" (L × W) |
|---|---|
| Board / material | .020 Chipboard |
| Color | White |
| Sold as | Case of 100 |
| Order in multiples of | 100 |
| Case weight | 40.68 lb |
| Outer carton (shipping) | 21.25 × 13.25 × 10.0 in |
| LTL freight class | Class 60 |
| SKU | RM18SS |
About this item
SKU RM18SS — 13" × 18", .020 Chipboard, White. Sold as a case of 100, shipped from US warehouses.
13x18" self-seal chipboard mailers in rigid chipboard, packed 100 per case (SKU RM18SS); this is a second listing of the same BOX case stock at the same price.
Sized for shipping and fulfillment work; the self-seal closure needs no tape. Order by the case of 100.
Nearby exact-spec options
Use these when the size, material, pack quantity, or workflow is close but not identical.
same size option
13x18 White Chipboard Tab Lock Stayflats Mailers 100/Case
$80.37
same material/workflow
15 x 12 3/4 in White Chipboard Self-Seal Mailers 100/Case
$80.98
same material/workflow
11x13.5 White Chipboard Self-Seal Mailers 100/Case
$70.86
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13.5x11 White Chipboard Self-Seal Mailers 200/Case
$109.19
Common questions
Do these mailers require additional stiffeners or padding?
No. The.020 chipboard construction provides inherent rigidity and puncture resistance without requiring additional board or foam inserts, saving you time and material costs during fulfillment operations.
How does the self-seal closure work?
The peel-and-seal strip is pressure-sensitive adhesive that activates when pressed. Simply peel back the protective liner, position the mailer flap, and press firmly to create a secure, tamper-evident seal. The integrated pull-tab tear strip allows recipients to open easily without tools.
What's the weight capacity of these flat mailers?
The.020 chipboard Stayflats Plus design safely protects lightweight to mid-weight flat items up to several pounds. The rigid construction prevents bending and crushing during transit, making them ideal for photos, documents, and flat merchandise up to typical e-commerce specifications.
Are these mailers environmentally friendly?
Yes. These white chipboard mailers are 100% recyclable and made from sustainable materials. They align with eco-conscious brand values and can be included in customer recycling programs, supporting your sustainability messaging.
Order support
Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.