Which 15 x 20 x 4 mailers should I start with?

Start with EPM15204 if the packed item fits the listed 15 x 20 x 4 mailer and the live product page details match your order requirement.

When should I choose a non-default SKU?

Choose a non-default SKU only when the live product page lists the material, color, closure/style, or pack quantity your order actually requires.

What if my item is close to 15 x 20 x 4?

Measure the product after adding the packing material you actually use. If any finished packed dimension is over the listed inside size, choose a larger product instead of forcing the fit.

Can I reorder by SKU?

Yes. Reorder by the same SKU when the product, pack quantity, and packing workflow have not changed. Use the quote path for larger, mixed-SKU, or recurring orders.

When should I request a bulk quote instead of using the product page?

Use the quote path when you are buying recurring volume, comparing multiple SKUs, or standardizing packaging across a team.

15 x 20 x 4 mailers

Packrift carries 15 x 20 x 4 poly mailers in 100 packs when matching SKUs are in stock.

SKU EPM15204 is the verified live option for this 15 x 20 x 4 exact-size page. Confirm the live product page before ordering because price, pack quantity, and availability can change.

1 matching SKUDefault: SKU EPM15204Shown unit: $0.28/mailer100 pack default

Ships from 5 US warehouses (Central IL, NE PA, South TX, SE GA, West CA), routed to the location nearest you.

Buying Path

Buy first

Use SKU EPM15204 when the packed item fits the listed 15 x 20 x 4 mailer and the product page details match your order.

Switch size if

If the finished packed item is tight on any side, do not force the 15 x 20 x 4 fit. Use a nearby size or finder page before ordering.

Quote path

Use the quote path for larger, recurring, or mixed-SKU orders where the live product page is not enough to standardize the buy.

Default pick: SKU EPM15204

SKU EPM15204 is the verified live option for this 15 x 20 x 4 exact-size page. Confirm the live product page before ordering because price, pack quantity, and availability can change.

$28.38 / $0.28/mailer per 100 pack

Shop SKU EPM15204 Reorder SKU EPM15204 Request a bulk quote

How to choose

Verified live option

Use EPM15204 when its live product details match the size, pack quantity, and listed spec your order requires.

Confirm the exact spec

If the finished packed item is tight on any side, do not force the 15 x 20 x 4 fit. Use a nearby size or finder page before ordering.

Use quote path for volume

Use the quote path when the buying team needs recurring volume, mixed SKUs, or a standardized order path.

Matching Packrift SKUs

This exact-size page currently has one verified in-stock SKU. Use the product page to confirm live price, availability, and pack quantity before buying.

Recommended default

SKU EPM15204

15x20x4" Expansion Poly Mailers, 2.5 Mil, Self-Seal, Case of 100

Default exact-size option. poly 2.5 mil self-seal

Choose this if: you want the verified Packrift product currently used for this 15 x 20 x 4 exact-size page.

Skip if: you need a different material, color, closure/style, pack quantity, or listed spec than this product page lists.

Buyer note: Confirm the live product page before ordering, especially price, pack quantity, and availability.

$28.38 / $0.28/mailer

View product Reorder SKU EPM15204 Bulk quote

Side-by-Side Details

Use this grid to compare only verified product fields: SKU, listed fit, material / style, pack quantity, bundle price, unit price, and the buying reason.

SKU	Best fit	Material / style	Pack / unit	Bundle / unit	Choose when
EPM15204	Default exact-size option	poly 2.5 mil self-seal	100	$28.38 / $0.28/mailer	you want the verified Packrift product currently used for this 15 x 20 x 4 exact-size page.

Use this size when

Your order requires the listed 15 x 20 x 4 size.
Your product and protective packing fit without forcing the fit.
You want to confirm the exact matching SKU before choosing a buying path.

Do not use this size when

Your product needs more room on any listed inside dimension.
You need a compliance, carrier, food, or hazardous-material claim not stated on the product page.
A nearby page better matches the size, format, or product spec.

Before you reorder

Confirm the SKU, pack quantity, price, and availability on the live product page.
Reorder by SKU when the product and packing workflow have not changed.
Use the quote path for larger, mixed-SKU, or recurring orders.

If 15 x 20 x 4 Almost Fits

Do not force a close fit. Compare nearby pages when the packed item needs more room, less empty space, or a different product family.

Buyer FAQ

Which 15 x 20 x 4 mailers should I start with?: Start with EPM15204 if the packed item fits the listed 15 x 20 x 4 mailer and the live product page details match your order requirement.
When should I choose a non-default SKU?: Choose a non-default SKU only when the live product page lists the material, color, closure/style, or pack quantity your order actually requires.
What if my item is close to 15 x 20 x 4?: Measure the product after adding the packing material you actually use. If any finished packed dimension is over the listed inside size, choose a larger product instead of forcing the fit.
Can I reorder by SKU?: Yes. Reorder by the same SKU when the product, pack quantity, and packing workflow have not changed. Use the quote path for larger, mixed-SKU, or recurring orders.
When should I request a bulk quote instead of using the product page?: Use the quote path when you are buying recurring volume, comparing multiple SKUs, or standardizing packaging across a team.