Good fit for small shipments where the item fits the listed usable mailer size and does not require a carton. Confirm usable size, closure style, cushioning, and whether the item needs a rigid box instead.
Best For
How to choose
Specs at a Glance
| Material | 14 lb. Olefin (Tyvek®) |
| Dimensions | 9 x 12 inches |
| Closure Type | Self-Seal (Redi-Strip) |
| Color | Black |
| Recyclable | Yes |
Common Use Cases
- Shipping small ecommerce orders, samples, apparel, parts, or documents that fit the listed mailer size.
- Reordering mailers by size, material, closure, and case quantity for packing stations.
- Reordering by exact product link, SKU, or sold-as quantity.
- Adding the item to a mixed-SKU or recurring supply request when quantity, delivery ZIP code, or timing matters.
What You'll Receive
- This listing is sold as Case of 100. Check the current product page for variant details, price, availability, and pack count before checkout.
Shipping & Packaging
Frequently Asked Questions
Yes. Tyvek® material provides moisture resistance, protecting contents from humidity, water damage, and environmental exposure during transit and storage. This is critical for protecting documents, electronics, and moisture-sensitive products.
Self-seal closures eliminate tape, staples, and manual sealing steps, reducing labor time per shipment by up to 30 seconds. This decreases fulfillment costs while ensuring consistent, professional sealing that meets carrier requirements.
Black envelopes create a premium, professional appearance that enhances brand perception with B2B recipients. They also provide better content privacy and visual appeal on delivery, differentiating your shipments from standard white mailers.
Tyvek® is a non-woven olefin fabric engineered for tear, puncture, and burst resistance. At 14 lb., this material withstands rough handling, machinery, and debris contact that would compromise paper envelopes, reducing damage claims and replacement costs.
Technical Specifications
| Closure Type | Self-Seal (Redi-Strip) |
| Recyclable | Yes |
| Color | Black |
| Strength / Material | 14 lb. Olefin |
| Dimensions (Internal) | 9" × 12" (L × W × H) |
Shipping Information
Outer Carton Dimensions
9" × 12" (L × W × H)
Unit of Measure
CASE
Qty Per Shipping Unit
100 PER CASE
LTL Freight Class
Class 78
Delivery Method
Shown at checkout
Processing and delivery timelines vary by product, warehouse, order size, and destination. Freight-sensitive or oversized items may require LTL delivery or a custom quote before shipment.
Checkout shows available shipping options for the selected SKU and quantity. Use the shipping and refund policy links for current policy details before ordering.
For larger, recurring, freight-sensitive, or mixed-SKU orders, send the SKU or product link, quantity, delivery ZIP code, receiving notes, and timing to support@packrift.com.
ORDER SUPPORT
Product Support
Specs, case quantities, and availability are listed on each product page. For bulk, mixed-SKU, or LTL freight orders, email support@packrift.com with the SKU, quantity, and delivery ZIP.
Use product support for fit, larger or recurring order, return, or order-issue questions. When price and Add to Cart are shown, checkout remains the direct ordering path.
Need a sample, fit check, or substitution review? Contact product support with the SKU, selected option, order quantity, and use case. Support will confirm the available path for that item.
Contact product supportBuyer guides
Buying notes and spec resources stay here instead of taking space above the cart.
Use this product as the source
9x12" Black Tyvek Self-Seal Mailers - Tear Resistant, 100/Case
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Compare resources using the current product page data: SKU TYC912B , type Envelopes & Mailers , sold-as unit CASE / pack count 100 PER CASE . Confirm the product page price, availability, and selected variant before ordering.
Compare usable size, padding, material, closure, and case quantity.
Product support Compare mailer vs boxUse this guide when item thickness or edge protection affects fit.
