Question 1

What is the merv?

Accepted Answer

No exception for Electrostatic filters?
  You mean Elect filters weren't included in their Merv tests? 
  It doesn't mean they arent Merv rated by their own makers &/or independent corps because most filters Merv ratings regardless of material they're made out of are simply based on their standards not actually tested by them.
 Automotive filters have no testing other than makers testing them & advertising their products abilities. We can Google most brands results/reviews to learn what to use & not use. Purolator makes an oil filter that last 20k miles & independant tests verified they actually do reach it too. Just say'n most filters are just independently tested then its best results are advertised by corps is all.
  Some of these Elec filters are in rated as much as 12 merv. Regardless who tests it they better meet it too & they do get tested bet on it. Lawsuites fly, products get pulled quickly these days if they dont reach advertised ratings as false advertising laws do still exist.

Question 2

Is it a Quantity of 2 like is in the picture?

Accepted Answer

No the price is per filter.

Question 3

how many times can you wash these metal filters

Accepted Answer

Ours are a year old washed once a month and should last the life of the house, for sure the rest of my life.  30 years +

Question 4

does it make any difference which side of filter faces the inside of the heating unit

Accepted Answer

Notice that the description says 6 stages.  Normally in the context of filtration, stages refers to filer media that capture different size particles.  The way it works is the filter layer (stage) which captures the biggest particles is first in stream, with the layer which captures the smallest particles last in stream.  That means that such a filter would have to be directional; it's the only way that makes sense.

So... if this filter is not actually directional, then it probably really doesn't have filtration "stages" at all.  I don't know what the actual story with this filter is, but it seems to me it can't both have stages and be bidirectional.

ASIN	B07FDH5RX8
Air Filter Construction	Panel
Best Sellers Rank	#16,739 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #174 in Furnace Filters
Brand Name	Trophy Air
Common Applications	Residential
Compatible Devices	Furnace
Compatible Hvac Systems	residential
Customer Reviews	4.5 4.5 out of 5 stars (7,155)
Filter Mounting Type	Slide In
Filter Shape	Rectangular
Item Dimensions L x W x Thickness	12"L x 12"W x 1"Th
Item Type Name	electrostatic
Manufacturer	Trophy Air
Manufacturer Part Number	TrophyAirParentASIN
Material Type	Aluminum
Model Number	12x12x1
Number of Packs	1

Washable & Reusable Electrostatic HVAC AC/Furnace Air Filter, Lasts a Lifetime, 6 Stage Permanent Air Filter, Healthier Home or Office, Made in The USA - Increases Airflow (12x12x1)

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