SKU: 17021658389

Aquamira Frontier Replacement Filter Series III

$14.39 $15.99
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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3

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Description

Aquamira Frontier Replacement Filter Series IIIExtend the capacity of your Frontier Pro with extra Series III GRN Line replacement filters. One extra filter literally doubles the amount of certified bacteria filtration on your journey, while adding less than a single ounce to your pack. The Frontier Pro gets even better with the Series III GRN Line replacement filter. This extremely light weight and packable replacement filter extends your trail or mission for another 50 gallons at less than 1

Extend the capacity of your Frontier Pro with extra Series III GRN Line replacement filters. One extra filter literally doubles the amount of certified bacteria filtration on your journey, while adding less than a single ounce to your pack.

The Frontier Pro gets even better with the Series III GRN Line replacement filter. This extremely light weight and packable replacement filter extends your trail or mission for another 50 gallons at less than 1 ounce of added weight. It also reduces waste and added weight.

The Frontier Series III GRN Line replacement filter is certified Bacteria, Cryptosporidium, and Giardia to EPA standards. The Aquamira Frontier PRO also reduces chemicals, chlorine, bad taste and odors and is certified lead free to NSF/ANSI-372. It installs quickly with just a twist of the wrist for quick and easy use.

Technical Information

"The Aquamira Series III GRN Line replacement filter is the heart of the newly redeisgned Frontier Pro. No need to ditch your entire filter system when it recaches the end of it's service life, now you can change out filters as needed and carry spares at under an ounce each. The Series III replacement filter improves performace, reduces weight and flows better than the previous carbon block version.

Frontier GRN Line filtration is achieved using our unique 2 stage Electro-Positive Adsorption Technology. The replaceable pre-filter disk removes larger particles, then final charged micro-glass fibers “pull” organisms as small as bacteria out of the water stream while still maintaining high flow rates and low pressure drops. GRN Line filters have been thoroughly tested and are certified* to remove protozoan cysts and bacteria to US EPA standards without the use of disinfecting chemicals such as chlorine, bromine, or iodine. The Frontier PRO is certified* lead free (ANSI/NSF-372) and also reduces chlorine and harmful chemicals, bad tastes, and odors. You will be amazed that a filter this small can do so much.

*Certifications by IAPMO R&T - An Authorized EPA, NSF/ANSI Certifying Agency "

Features and Benefits

  • GRN Line Bacteria Filter with up to 500 ml/minute flow rate
  • Certified filtration for 50 gallons (over 180 L)
  • Ultralight and compact 2.5 oz. (71 g) packable protection
  • Replaceable filter design means highly cost-effective extra capacity capability
  • Connects to bottles, bags, bladders, and gravity systems via UQC quick connects
  • Includes three pre-filters to extend filter life and remove twigs and debris
  • Includes Miraguard™ Antimicrobial* Technology which suppresses the growth of bacteria, algae, fungus, mold and mildew within the filter media
  • Certified lead free (NSF/ANSI-372)
  • BPA free, chemical free, and iodine free
  • Filter made in the USA

Product Downloads

Series III GRN Filter Performance Data Sheet

Series III GRN Filter Instructions Manual

IAPMO Lead Free Content Certificate

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 17021658389

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4.5 ★★★★★
Based on 19 reviews
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Verified Purchase
Nina Miller
Bozeman, US
★★★★★ 5
Definitely sweet but good mixed
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
The vanilla would be too sweet on it's own for me but with strawberries and spinach it's perfect.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2025
L
Verified Purchase
Lakerat
New York, US
★★★★★ 1
Horribly ‘weird’ sweet flavor
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
Horrible taste - synthetic sweetness than destroys my shakes. I bought Thorne because of its high quality but this is one of their products that won’t work for me. I’m struggling through the jar because it’s too expensive to waste. Using cacao powder, cinnamon & cardamom to try to tone down the overwhelming ‘sweet.’
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
B
Verified Purchase
Bill
Whiting, US
★★★★★ 5
Absolutely Great Stuff
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
The vanilla flavored Protein Powder has to be the Best tasting Protein Powder Ever. Literally delicious. Product satisfies your appetite while supplementing your body with needed protein and nutrients. Combined with gym workouts I’ve noticed firmer muscles. A nice noticeable improvement.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
C
Verified Purchase
Ckelly
Louisville, US
★★★★★ 5
It's a thing...
Flavor Name: Vanilla, Size: 14 Servings (Pack of 1)
I am probably the most skeptical person when it comes to supplements. I’ve tried so many over the years and honestly… most of them felt like a waste of money or just hype. But I have to say—this combo has completely surprised me. I’ve been consistently using Thorne protein and creatine, and within a few weeks I started noticing real changes. Not just how I feel, but how I look. My shoulders especially are looking more defined, and I feel stronger in my workouts without feeling jittery or weird like some products can make you feel. What really stands out to me is how clean and simple it is. No bloating, no heavy feeling, no unnecessary extras—just something that actually supports what I’m already doing. I also love that it fits easily into my routine. I take my creatine with my morning coffee (super easy habit), and I’ve been doing a protein shake after workouts which has helped a lot with recovery and keeping me on track nutritionally. I’m currently in a calorie deficit getting ready for a trip, and this has honestly made it feel doable without feeling depleted. If you’re someone like me who is hesitant about supplements, I’d say this is the first time I’ve actually felt like something made a noticeable difference.
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Reviewed in the United States on April 3, 2026
K
Verified Purchase
Kathy F
New York, US
★★★★★ 4
Good Quality
Flavor Name: Vanilla, Size: 30 Servings (Pack of 1)
It is good quality but too sweet for my taste.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026

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