This Aprilaire Space-Guard 16x28x6 replacement furnace filter is a MERV 8 aftermarket replacement manufactured by FilterBuy. It is designed to fit Aprilaire 2400 air cleaners.

Nominal size of 16x28x6. Actual dime...

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Product Review

This Aprilaire Space-Guard 16x28x6 replacement furnace filter is a MERV 8 aftermarket replacement manufactured by FilterBuy. It is designed to fit Aprilaire 2400 air cleaners.

Nominal size of 16x28x6. Actual dimensions are 15.38 x 26.98 x 6.

Note that unlike the replacement media, this filter is a boxed cardboard frame that is designed to drop directly into the existing plastic housing, not requiring additional fingers for support.

This AFB Silver MERV 8 replacement filter is designed to last 6 months. The filters ship directly from the manufacturer to your doorstep, allowing AFB the ability to offer a premium product at a reasonable price.

Each quantity purchased is for a pack of 2 filters.

Note that AFB 16x28x6 Apriliare-Space-Guard replacement filters come in AFB Silver (Merv 8), AFB Gold (Merv 11), and AFB Platinum (Merv 13). The most commonly used filter for home or business use is the AFB Silver (Merv 8). If you have pets or allergies we recommend the AFB Gold (Merv 11). If you have asthma or other respiratory illness, we recommend the Merv 13.

100% made in the USA using all USA materials. Air FilterBuy: Breathe Better!



  • 16x28x6 replacement whole house air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 15.50" x 26.88" x 6.00")
  • MERV 8 synthetic media (comparable with MPR 600 & FPR 5) protects homes from mold, pollen, and more while trapping 90% of dust particles without impacting air flow
  • High quality construction (made in the USA) features an electrostatically charged design with 8 pleats per foot that captures more harmful particles and lasts 3x longer than fiberglass models (replace every 90 days for best performance)
  • Easy installation beverage board (recyclable) frames with dual wire backings improve structural integrity and outperform standard cardboard designs by resisting extreme temperatures
  • Compatible Models: Aprilaire Space-Gard (#401, Cleaner Model 2400), Lennox (X1444, X4559, X5425)

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