Filters
2×4 ft replacement HEPA filter
A replacement filter for compatible 2×4 fan filter units.
$598.00–$698.00
Reference price · delivered quote availableSee specs Equipment / Filters
Filters / Flowhoods catalog
3×4 ft replacement HEPA filter
A 3×4 replacement HEPA filter for a compatible FFU. Verify the exact frame size and seal orientation before ordering.
Reference product price
$950.00
Price checked September 25, 2026 · final pricing in your quoteRequest delivered quoteEnter your quantity and shipping address. We’ll email a quote within 24 hours; if you approve it, we’ll send an invoice. No payment is collected now.
Delivery: This filter ships by freight, quoted separately.
Product details
Check the fit.
Compare the dimensions, filter, and power requirements with your workspace. Add any questions about fit or options to your quote request.
- Face size
- 36 × 48 in.
- Efficiency
- 99.99% at 0.3 microns
- Made in
- USA
- Fan / housing
- Not included
Keep comparing
Related equipment.
Filters
20×20×1 in. MERV 11 prefilters
Replacement intake prefilters for compatible FFUs.
$89.00
Reference price · delivered quote availableSee specs