Fits checked Oct 1, 2026 · How we check
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GeneralAire · humidifier · whole house bypass

GeneralAire 4200 replacement filter

Use part GA35. Replace 1 to 2 times per humidification season.

The filter that fits

Maker lists this model

GeneralAire GA35 pad

GA35 Vapor Pad

Part number
GA35also sold as 7902
How many
1 per unit
How often
Replace 1 to 2 times per humidification season

The maker does not say how many pads the unit holds; one is assumed.

Buy GA35 pad on AmazonManufacturer page

Opens an Amazon search for GeneralAire GA35 pad. Check the listing says GA35.

See the sources

Does your exact model share this filter?

GeneralAire labels several versions of the 4200. Check the label on your unit.

  • 4200 takes GA35
  • 4200A same filter
  • 4200M same filter

Sources

High confidence: the manufacturer names this exact model on a live page. Each line is the page we read and the day we read it.

  • Which filter fits generalfilters.com Maker's own page checked Oct 1, 2026
    Fits: GeneralAire® Models 4200 & 4500 Fits: Aprilaire® Models 350, 360, 568, 560, 600, 700, 760 & 768 Fits: Honeywell® Models HE260, HE265, HE360 & HE365
  • How often generalfilters.com Maker's own page checked Oct 1, 2026
    Common Question: How often should I change my Vapor Pad ®? You'll want to replace your Vapor Pad ® 1-2 times per humidification season.
  • What's in it generalfilters.com Maker's own page checked Oct 1, 2026
    Your Vapor Pad ® is constructed using an expanded aluminum base, coated with a hydrophilic material that absorbs water.
Show all 6 sources

Which filter fits

  1. generalfilters.com Maker's own page checked Oct 1, 2026
    Fits: GeneralAire® Models 4200 & 4500 Fits: Aprilaire® Models 350, 360, 568, 560, 600, 700, 760 & 768 Fits: Honeywell® Models HE260, HE265, HE360 & HE365
  2. generalfilters.com Maker's own page checked Oct 1, 2026
    Page for the 4200M (per its URL): Vapor Pad Size 35 ... PARTS: GA35 Vapor Pad GFI# 7902
  3. generalfilters.com Maker's own page checked Oct 1, 2026
    Model Name: 4200A ... listed under GeneralAire's By-pass products (/products/by-pass/)
  4. generalfilters.com Maker's own page checked Oct 1, 2026
    Page for the 4400A (per its URL): Vapor Pad Size 35 ... PARTS: GA35 Vapor Pad GFI# 7902

How often

  1. generalfilters.com Maker's own page checked Oct 1, 2026
    Common Question: How often should I change my Vapor Pad ®? You'll want to replace your Vapor Pad ® 1-2 times per humidification season.

What's in it

  1. generalfilters.com Maker's own page checked Oct 1, 2026
    Your Vapor Pad ® is constructed using an expanded aluminum base, coated with a hydrophilic material that absorbs water.