8.5x12" Bubble Lined Poly Mailers - 5/16" Cushioning, Case of 50 unit economics snapshot

Create a source-snapshot unit price and unit weight frame without claiming live pricing. This page is generated from Packrift's top-1,000 exact-spec feed plus SKU/title/URL enrichment from the local product graph.

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Benchmark question

Create a source-snapshot unit price and unit weight frame without claiming live pricing.

Source facts

SKU	B921
Title	8.5x12" Bubble Lined Poly Mailers - 5/16" Cushioning, Case of 50
Family	mailers
Dimensions	8.5" x 12"
Material / Color	Polyethylene with 5/16" bubble lining / not listed
Pack count	50 ct
Weight	3.45 lb
Source quality	10/10
Canonical product	https://packrift.com/products/8-5x12-bubble-lined-poly-mailers-5-16-cushioning-case-of-50

Calculated benchmark

Price: $44.56 source snapshot.
Unit-pricing measure: 50 ct.
Source-snapshot unit price: $0.89.
Source-snapshot unit weight: 0.069 lb.

Operational checklist

Use current Packrift pricing before buying.
Separate source-snapshot math from live margin analysis.
Normalize by unit, weight, or cube where the data supports it.
Confirm opening, self-seal behavior, and usable depth before replacing a box.
Use added protection for rigid, sharp, or crush-sensitive products.

Quality guardrails

Static source snapshots are not live price, inventory, freight, or final substitute approval.
Missing dimensions or metrics are called out directly instead of guessed.
Every page links to the canonical Packrift product page and keeps Packrift.com as the commerce source of truth.