NPK INDUSTRIES - RAW SILICA - 4.5KG

Marsoni

M251S

$267.57

Get it in 3 business days with 1 day shipping. Friday, May 29

NPK INDUSTRIES - RAW SILICA - 4.5KGRAW Silica contains 45% Silicon Dioxide which is the highest concentration of silicon dioxide available to the home gardener. RAW Silica is flowable and suspend able in water and naturally available to the plant. Since RAW Silica is a natural form of silicon dioxide, it is PH neutral and does not cloud when added to water. RAW Silica can be used during all stages of growth and bloom for optimal stem and cell wall strength. It is a beneficial

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I'm extremely happy with this TRIGHTFILTERS 18x24x1 Air Filter 4-pack! They fit perfectly into my furnace, and I can already notice the improvement in our indoor air quality. These MERV 8 pleated filters do a great job catching dust and allergens. What's truly impressive is the **good value and price** for such high-quality filters. Getting a pack of four means I'm set for a while, and I feel confident knowing they're effectively protecting my HVAC system. A definite 5-star purchase that I'll be making again!

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Reviewed in the United States on May 10, 2026

Verified Purchase

Michael Caroselli

Birmingham, US

★★★★★ 5

Great value,

Size: 20x20x1

MERV-8 filter in 20x20 - pretty standard size. Nicely made, delivered in two days in a four pack for about $6.50 each. Great value. No complaints. Perfect for my home with just my cat Gigi and me!

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Reviewed in the United States on May 24, 2026

Verified Purchase

Bella

Alexandria, US

★★★★★ 5

Excellent filters

Size: 14x20x1

Excellent filters that do a great job. After educating myself on furnace filters I was surprised to learn that higher MERV numbers can put a strain on your air conditioning system and furnace. These are much more affordable and are very effective at filtering the air. I’m allergic to everything and these work just fine.

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Reviewed in the United States on April 30, 2026