In stock SKU RM1721BKGTIN 841436080880

17x21" Black Self-Seal Chipboard Mailers - Puncture Resistant, Case of 100

Professional black self-seal stayflat mailers sized 17x21" protect documents and photos during shipment without additional stiffeners. Engineered from .028 chipboard with peel-and-seal closure and easy tear strip. Lightweight design reduces freight costs–sold by the case of 100 units.
$185.15 / case of 100$1.85 per mailer
= 100 mailers · Total $185.15
Request bulk pricing

Ships from the nearest of 5 US warehouses · freight calculated at checkout

30-day returns on stock items · Return policy

Inside dimensions 17" × 21"
Board / material .028 Chipboard
Color Black
Freight class Class 60

Specifications

Inside dimensions17" × 21" (L × W)
Board / material.028 Chipboard
ColorBlack
Sold asCase of 100
Order in multiples of100
Case weight63.94 lb
Outer carton (shipping)24.25 × 17.5 × 10.25 in
LTL freight classClass 60
GTIN841436080880
SKURM1721BK

About this item

SKU RM1721BK — 17" × 21", .028 Chipboard, Black. Sold as a case of 100, shipped from US warehouses.

The 17x21" Black Self-Seal Chipboard Mailers - Puncture Resistant is a rigid chipboard mailer for photos, prints, documents, calendars, certificates, and flat items that should not ship in a soft envelope. Listed specs include size 17" x 21"; chipboard material; case of 100. Use it as a mailing envelope, poly mailer, padded mailer, or flat document shipper when the item fits the listed size.

Nearby exact-spec options

Use these when the size, material, pack quantity, or workflow is close but not identical.

Ship photos, documents, and sensitive items with confidence using these 17x21" white self-seal stayflat mailers. Made from rigid .020 chipboard that requires no additional stiffeners, these peel-and-seal mailers offer professional protection at lightweight cost savings. 100 mailers per case with pull-tab tear strip for effortless opening.same size option 17x21" White Chipboard Self-Seal Stayflats Plus Mailers - 100/Case SKU RM7PS · CASE $128.48Protect oversized prints and documents with these durable 22 x 17" kraft jumbo envelopes. Made from 28 lb. kraft paper stock with ungummed flaps for cost-effective reuse. Flat storage design and bulk case pricing make them ideal for high-volume mailrooms and shipping operations.nearby size option 22 x 17" Kraft Jumbo Envelopes 28 lb - Case of 100 SKU EN1084 · CASE $63.28Ship oversized documents, prints, and flat items with our 20 x 15" kraft jumbo envelopes. Ungummed flaps enable reuse, reducing packaging costs. 28 lb. paper stock provides durability for mailroom and warehouse operations–100 envelopes per case.mailer size alternative 20 x 15" Kraft Jumbo Envelopes - 28 lb. Ungummed, Case of 100 SKU EN1082 · CASE $59.43Ship with confidence using these 20x14.5 nylon reinforced mailers designed for e-commerce brands. Heavy-duty nylon fibers deliver superior tear resistance without the weight penalty–perfect for cost-effective shipping. Each case includes 250 mailers ready to tape or staple.mailer size alternative 20x14.5 Heavy-Duty Nylon Reinforced Mailers - Tear Resistant, Case of 250 SKU B890 · CASE $272.16

Frequently bought with

Common questions

Is this the right mailer for my order?
Use 17x21" Black Self-Seal Chipboard Mailers - Puncture Resistant, Case of 100 when your item or workflow matches small shipments where the item fits the listed usable mailer size and does not require a carton. Check the live product page against your needs before ordering.
What specs should I confirm before checkout?
Confirm usable size, material, cushioning, closure, and case quantity. This listing is summarized by size: 17 x 21 in; material: paper; quantity: Case of 100. Use the current SKU, variant, price, availability, and delivery options shown on the product page.
Can I request this for a larger or repeat order?
Yes. For larger quantities, mixed-SKU orders, or recurring supply, send Packrift the product link or SKU, quantity, delivery ZIP code, receiving notes, and timing.
How should I plan delivery for this item?
Delivery options and timing are shown at checkout based on the item, quantity, and destination. For larger, freight-sensitive, or mixed-SKU orders, request a quote before placing the order.

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.

+1 (302) 216-2975 support@packrift.com Mon–Fri, Eastern Corrugated buying guide →