Big II

(1 customer review)


or 4 installments from $34.99 by Afterpay More info

Recommended for 2-4 persons

Dimensions: 9.25″ x 21″

BPA & PVC free plastic

Includes one ProOne® G2.0 5″ filter (upgrade available)


SKU: PO1-BIGII Categories: ,


Whether on the go, emergency preparedness or for daily use, be at ease knowing you have clean drinkable water with the new ProOne® BIG II Gravity water filtration system.


Easy to set up. No electricity or plumbing required. Use with just about any potable water source whether at home, office, school, camping or traveling.


All ProOne® gravity systems feature ProOne® G2.0 “all-in-one” NSF/ANSI-42 component certified filter technology – the smarter filterTM. Independent lab tested to NSF standards 42, 53, P231, microplastics,1,4 Dioxane, Microcystin, emerging contaminants, PFOAS (GenX), TTHM’s, bacteria, Fluoride, Lead, Parasites and more. Visit our lab reports for full details on the 200+ tested contaminants.


The new ProOne® BIG II Gravity system features exclusive design for viewing how much water is in the lower container by just looking at it. The BIG II is made from heavy duty BPA, BPS & BPF Free plastic for long lasting durability and includes a BPA Free plastic spigot.



Click here for lab report

Click here for instructions

Additional information

Filter Options

1 ProOne® G2.0 5" Filter Element, 2 ProOne® G2.0 7" Filter Elements


2.5 Gallons


30-Day Risk-Free Guarantee, 1-year limited warranty


Plastic unit, filter(s), knob kit, spigot kit, plug(s), sponge, instruction booklet

Currently no frequently asked questions available for this product.
Feel free to contact for any questions you may have!

1 review for Big II

  1. delbrie2017 (verified owner)

    I have been using Prooneusa products for many years and we absolutely love them all. We have tried the shower head filter, all the water purification systems and find everything to be quality and more!

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