---
title: "Reviews — 16x25x4 furnace filter merv 11 - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/16x25x4-furnace-filter-merv-11/reviews"
last_updated: "2026-08-08T10:27:56.791Z"
locale: en
meta:
  description: "Niche score 53/100 · $701K/yr market · 89K searches/yr · $68.89 avg price. Strong incumbent ratings (4.7★) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 53/100 · $701K/yr market · 89K searches/yr · $68.89 avg price. Strong incumbent ratings (4.7★) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Reviews — 16x25x4 furnace filter merv 11 - Flapen"
---

# **16x25x4 furnace filter merv 11**

**Worth a look**

Shows low returns (0.9%), but strong incumbent ratings (4.7★) keeps it on the watch list.

Market size 69Growth 47Conversion 93Competition 30Returns 95Price range 59Avg price 86Brand share 22Review moat 22Quality gap 21

**Returns**

**Incredible****0.9%**

return rate — above 5% kills the launch gate

**Conversion**

**Great****11.4%**

search→purchase rate — share of searches ending in a sale

**Avg price**

**Great****$68.89**

avg listing price — sweet spot $15–$100

**Market size**

**Good****$701K**

$701K/yr · 89K searches

**Price range**

**Good****$35.63–$144.45**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Growth**

**Okay****+17.8%**

90-day search growth — must beat 0% to launch

**Competition**

**Okay****67%**

top-5 click share — leaders hold, buyers still browse

**Brand share**

**Bad****91%**

top-5 brand share — brand-locked demand

**Review moat**

**Bad****8,844**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")

## Reviews