Partners Brand PB3994 White Block Reclosable Poly Bags 18 x 20 2 mil PK500

White Block Reclosable Poly Bags 18 x 20

Partners Brand PB3994 bags are clear polyethylene sacks with a press-seal closure sized at 18 by 20 inches and 2 mil thickness. They arrive in a pack of 500 for high-volume shipping, mailing or storage operations. The white block area accepts marker or label identification without obscuring contents. Warehouses, fulfilment centres and mailrooms use them to organise and protect flat or bulky items.

Upgrading from single-use bags or loose wrap

Switching to these reclosable bags removes the need for tape, heat sealers or twist ties when packages must be opened and resealed during picking, inspection or returns processing. The jump is worth it when order accuracy checks or customer returns require repeated access without replacing the bag each time. Buyers who only ship once and never reopen parcels will not recover the extra cost per unit.

Installation and common issues

Opening the carton and counting out 500 bags is the only setup; no tools or equipment are required. The most frequent problem is static cling causing bags to stick together, which slows high-speed packing lines unless an anti-static bar or ioniser is used. Overloading beyond the 2 mil rating can split the seal or side walls, so match contents to the bag strength.