12 x 16 x 4" White Expandable Tyvek® Envelopes

Name: 12 x 16 x 4" White Expandable Tyvek® Envelopes
Brand: Boxes 4 U
Availability: InStock

Boxes 4 U · sold by Boxes 4 U · $221.33 · in stock

Tyvek® envelopes provide superior puncture, tear and moisture protection. Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal closure. 50 per case.

Option	Price	Stock
Default Title	$221.33	in stock	Order via Kaupia → · Buy at Boxes 4 U

Prices and stock from boxes4u.com’s public catalog, last checked 2026-11-02 19:07 UTC. “Order via Kaupia” shows the delivered price to your zip (item + the store’s shipping + est. tax) and places the order through Kaupia with a delivery guarantee; “Buy at the store” goes to the store’s own checkout. Agents: JSON at https://api.kaupia.com/v1/product?id=kp:fc89489a-effd-49ca-90ed-012bb931db9a; delivered price GET /v1/quote; order with POST /v1/orders or MCP place_order.