Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 25 - Jun 30
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Description
Direct Vent 4.5/7.5 Flex Square Termination Kit with 18" Compressed Flex Pipe 77L88 SFKIT18Flex Square Termination with 18" Compressed Flex Vent Pipe Kit Includes: 1 Termination 1 Firestop Spacer 2 Gear Clamps Inner and Outer 1 Flex Adapter 1 18" Compressed Flex Vent Pipe *All compressed flex vents can be expanded up to two times. 12" Length 12 Flex DV Vent 18" Length 18 Flex DV Vent 24" Length 24 Flex DV Vent 36" Length 36 Flex DV Vent 48" Length 48 Flex DV Vent Click here for complete 4. 5 7. 5 Flex Vent Series
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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- We offer a 30-day return/exchange service after receiving.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.5 ★★★★★
Based on 1268 reviews
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Product Reviews
★★★★★ 5
CLEAN Supplement w/Positive Benefits
Size: 90 Count (Pack of 1), Size: 90 Count (Pack of 1)
Very PURE supplement. No extremely nasty fillers or chemical compounds which is hard to find today on the market. I feel as though it's helping slightly with my energy levels, with Mag. Malate being the key. I take one every morning on an empty stomach with a probiotic and 24oz of water. Then a Mag. Glycinate at night to encourage sleep. The combination of these two Magnesium's have encouraged more regular bathroom visits for me when consistently taken (do not exceed 400mg-500mg or severe laxative effects can take place). It is a larger pill but I have not had issues with swallowing- as I can have with others. Yes, a bit more costly than similar types but this brand focuses on main ingredients. Will buy again! Impressed with the company's quality and transparency.
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Reviewed in the United States on February 24, 2026
★★★★★ 5
That it is effective
Size: 180 Count (Pack of 1)
This product is very good..!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
★★★★★ 5
Finally Found a Magnesium That Works Without Side Effects
Size: 180 Count (Pack of 1)
I started taking this magnesium because I was dealing with frequent leg cramps, especially at night, and it has made a huge difference for me. Since using this brand consistently, my cramps have almost completely disappeared and my muscles feel much more relaxed. Another thing I really appreciate is that it does not upset my stomach or cause diarrhea like other magnesium supplements I tried before. After testing several brands, this is the only one that has worked well for me without uncomfortable side effects.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
BC
Size: 180 Count (Pack of 1)
Great product…great service
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Works great!
Size: 180 Count (Pack of 1)
Purchased this item at the recommendation of my PCP to help alleviate my Charlie Horses in my legs. Take 3 tabs an hour or so before bedtime, and it solved that issue.
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Reviewed in the United States on February 16, 2026
