Guide-backed product set
Start with SKU EN1020 when its listed details match the order.
Extra-heavy case weight mailers guide
Current Packrift rows for extra-heavy case weight mailers help buyers compare SKUs, case weights, product pages, pack quantities, prices, and quote paths.
Use this extra-heavy case weight mailers page to understand the buying implication: the buyer is comparing current mailer case rows that ship at 40 lb or heavier by SKU, case weight, product page, pack quantity, price, reorder path, and quote path, then compare related Packrift SKUs.
8 matching SKUsStart: SKU EN1020Lowest shown unit: $0.15/mailerSource-reviewed fit dataTerm: extra-heavy case weight mailers
Decision Summary
Compare verified fields
Use the product grid to compare SKU, size, material, style, pack quantity, and price.
Use quote path for volume
Use the quote path for larger, recurring, mixed-SKU, or standardized purchasing.
Recommended Packrift products
These products come from Packrift catalog rows tied to this reference guide page. Verify the final SKU on the live product page before ordering.
SKU EN1020
9x6 Kraft Gummed Envelopes 28lb - Secure Seal, Case of 2500
9 x 6
kraft
Choose this if: you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match.
Skip if: the term explains a different material, strength, format, closure, or workflow than your order needs.
$380.56 / $0.15/mailer
SKU EN1026
9x12" White Gummed Envelopes 28lb Paper - Secure Seal, Case of 1000
9 x 12
white paper
Choose this if: you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match.
Skip if: the term explains a different material, strength, format, closure, or workflow than your order needs.
$221.80 / $0.22/mailer
SKU B884
12 x 7 1/4" #1 Nylon Reinforced Mailers - Tear Resistant, Case of 1000
12 x 7 1/4
Choose this if: you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match.
Skip if: the term explains a different material, strength, format, closure, or workflow than your order needs.
$314.42 / $0.31/mailer
SKU RM6W
13x18 White Chipboard Tab Lock Stayflats Mailers - 100/Case
13 x 18
white
Choose this if: you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match.
Skip if: the term explains a different material, strength, format, closure, or workflow than your order needs.
$71.09 / $0.71/mailer
SKU RM7PS
17x21" White Chipboard Self-Seal Stayflats Plus Mailers - 100/Case
17 x 21
white
Choose this if: you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match.
Skip if: the term explains a different material, strength, format, closure, or workflow than your order needs.
$128.48 / $1.28/mailer
SKU MLR1294K
12x9x4" Kraft ECT-32-B Corrugated Mailers - Crush-Resistant, Bundle of 50
12 x 9 x 4
ECT-32 kraft corrugated
Choose this if: you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match.
Skip if: the term explains a different material, strength, format, closure, or workflow than your order needs.
$86.55 / $1.73/mailer
SKU ML23132
23x13x2.5" White Corrugated Literature Mailers - ECT-32-B, 50 Count
23 x 13 x 2 1/2
ECT-32 white corrugated
Choose this if: you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match.
Skip if: the term explains a different material, strength, format, closure, or workflow than your order needs.
$115.81 / $2.32/mailer
SKU MFL16162K
16x16x2.75" Kraft Deluxe Literature Mailer - Crush Resistant, 50-Pack
16 x 16 x 2 3/4
kraft
Choose this if: you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match.
Skip if: the term explains a different material, strength, format, closure, or workflow than your order needs.
$132.87 / $2.66/mailer
Side-by-Side Details
The grid uses product fields already present in the catalog/source graph. It does not add certifications, guarantees, reviews, or shipping promises.
| SKU | Product | Size/spec | Pack | Bundle / unit | Choose when |
|---|---|---|---|---|---|
| EN1020 | 9x6 Kraft Gummed Envelopes 28lb - Secure Seal, Case of 2500 | 9 x 6 | 2500 | $380.56 / $0.15/mailer | you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match. |
| EN1026 | 9x12" White Gummed Envelopes 28lb Paper - Secure Seal, Case of 1000 | 9 x 12 | 1000 | $221.80 / $0.22/mailer | you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match. |
| B884 | 12 x 7 1/4" #1 Nylon Reinforced Mailers - Tear Resistant, Case of 1000 | 12 x 7 1/4 | 1000 | $314.42 / $0.31/mailer | you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match. |
| RM6W | 13x18 White Chipboard Tab Lock Stayflats Mailers - 100/Case | 13 x 18 | 100 | $71.09 / $0.71/mailer | you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match. |
| RM7PS | 17x21" White Chipboard Self-Seal Stayflats Plus Mailers - 100/Case | 17 x 21 | 100 | $128.48 / $1.28/mailer | you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match. |
| MLR1294K | 12x9x4" Kraft ECT-32-B Corrugated Mailers - Crush-Resistant, Bundle of 50 | 12 x 9 x 4 | 50 | $86.55 / $1.73/mailer | you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match. |
| ML23132 | 23x13x2.5" White Corrugated Literature Mailers - ECT-32-B, 50 Count | 23 x 13 x 2 1/2 | 50 | $115.81 / $2.32/mailer | you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match. |
| MFL16162K | 16x16x2.75" Kraft Deluxe Literature Mailer - Crush Resistant, 50-Pack | 16 x 16 x 2 3/4 | 50 | $132.87 / $2.66/mailer | you want a Packrift product related to the extra-heavy case weight mailers buying concept and the product page details match. |
Buyer Guidance
Use this page when
- The buying decision depends on the buyer is comparing current mailer case rows that ship at 40 lb or heavier by SKU, case weight, product page, pack quantity, price, reorder path, and quote path.
- You want to compare Packrift mailers from verified catalog rows.
- You need a direct path from research to product pages or a bulk quote.
Do not use this page when
- You need a certification, guarantee, carrier rule, or location claim not stated in the source data.
- The item, size, material, closure, or pack quantity differs from the product page details.
- A narrower exact-spec page better matches the SKU decision.
Before you buy
- Open the product page for live price, pack quantity, and availability.
- Compare substitutes if the product is close but not exact.
- Use the quote path for larger, recurring, or mixed-SKU orders.
Verified Product Data
| Fitment review | Source-reviewed item dimensions and product-family rules |
|---|---|
| Family | mailers |
| Term | extra-heavy case weight mailers |
| Definition | Current Packrift catalog rows for extra-heavy case weight mailers, selected from products with weight_lb >= 40. |
| Buying implication | the buyer is comparing current mailer case rows that ship at 40 lb or heavier by SKU, case weight, product page, pack quantity, price, reorder path, and quote path |
Related pages
Support resources
Buyer FAQ
- Which Extra-heavy case weight mailers guide product should I start with?
- Start with SKU EN1020 when its live product page details match the size, material, style, pack quantity, and price requirement.
- How should I compare the products?
- Compare only verified fields: SKU, product title, listed size or spec, pack quantity, price, product URL, and the stated buying reason.
- When should I choose a substitute?
- Choose a substitute when the product page shows a better match for size, material, thickness, closure, format, pack quantity, or availability.
- When should I request a bulk quote?
- Request a quote for recurring volume, mixed-SKU orders, or when a team needs to standardize a buying path across locations or workflows.