---
title: "Trend — 18x18x1 air filter - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/18x18x1-air-filter/trend"
last_updated: "2026-08-08T10:22:58.954Z"
locale: en
meta:
  description: "Niche score 60/100 · $1.2M/yr market · 249K searches/yr · $34.47 avg price. Clears our launch bar. Data updated Jul 2026."
  "og:description": "Niche score 60/100 · $1.2M/yr market · 249K searches/yr · $34.47 avg price. Clears our launch bar. Data updated Jul 2026."
  "og:title": "Trend — 18x18x1 air filter - Flapen"
---

# **18x18x1 air filter**

**Launch it**

A $1.2M/yr market growing +30.3% this quarter with returns at 0.7% — clears our launch bar.

Market size 81Growth 56Conversion 96Competition 39Returns 96Price range 81Avg price 95Brand share 24Review moat 18Quality gap 20

**Conversion**

**Incredible****14.0%**

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

**Returns**

**Incredible****0.7%**

return rate — above 5% kills the launch gate

**Avg price**

**Incredible****$34.47**

avg listing price — sweet spot $15–$100

**Market size**

**Great****$1.2M**

$1.2M/yr · 249K searches

**Price range**

**Great****$8.75–$45.61**

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

**Growth**

**Good****+30.3%**

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

**Competition**

**Okay****61%**

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

**Brand share**

**Bad****90%**

top-5 brand share — brand-locked demand

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Review moat**

**Bad****17,216.95**

avg incumbent reviews — the moat a new listing must climb

## Trend