---
title: "Search terms — 16x28x6 furnace filter - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/16x28x6-furnace-filter/search-terms"
last_updated: "2026-08-08T13:54:46.415Z"
locale: en
meta:
  description: "Niche score 52/100 · $50K/yr market · 11K searches/yr. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
  "og:description": "Niche score 52/100 · $50K/yr market · 11K searches/yr. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
  "og:title": "Search terms — 16x28x6 furnace filter - Flapen"
---

# **16x28x6 furnace filter**

**Worth a look**

Shows low returns (0.7%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.

Market size 12Growth 63Conversion 77Competition 13Returns 96Price range 95Avg price 89Brand share 0Review moat 46Quality gap 95

**Returns**

**Incredible****0.7%**

return rate — above 5% kills the launch gate

**Quality gap**

**Incredible****4.0★**

avg incumbent rating — lower means beatable quality

**Price range**

**Incredible****$40.53–$97.17**

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

**Avg price**

**Great****$61.36**

avg listing price — sweet spot $15–$100

**Conversion**

**Great****7.5%**

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

**Growth**

**Good****+40.6%**

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

**Review moat**

**Okay****1,866.18**

avg incumbent reviews — the moat a new listing must climb

**Competition**

**Bad****85%**

top-5 click share — a locked-up shelf

**Market size**

**Bad****$50K**

$50K/yr · 11K searches

**Brand share**

**Bad****100%**

top-5 brand share — brand-locked demand

**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** Quality Gap**](https://flapen.com/research/niches?market=us&signal=quality_gap "Avg rating < 4.0") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")

## Search terms