16x21x1 Air Filter
Efficiency	APR 2250	APR 2250	APR 1950	APR 1550	APR 650	Carbon
Equivalent	N/A	N/A	Merv 13	Merv 11	Merv 8	N/A
Performance	Best	Best	Best	Better	Good	N/A
Actual Size	15.5x20.5x1	Actual Size	Actual Size	Actual Size	Actual Size	Actual Size
Brand	Accumulair	Accumulair	Accumulair	Accumulair	Accumulair	Accumulair
Item #	FI16X21	FI16X21A	FD16X21A	FA16X21A	FB16X21A	FO16X21X1A
Purchase	$22.43 Min Qty: 2 Order Options	$22.43 Min Qty: 2 Order Options	$19.79 Min Qty: 2 Order Options	$14.51 Min Qty: 2 Order Options	$11.87 Min Qty: 2 Order Options	$19.79 Min Qty: 2 Order Options
Product Page	More Info »	More Info »	More Info »	More Info »	More Info »	More Info »

16x21x1

Air Filter

Efficiency: APR 2250

Equivalent: N/A

Performance: Best

Actual Size: 15.5x20.5x1

Brand: Accumulair

Item # FI16X21

$22.43

Min Qty: 2

Order Options

Efficiency: APR 2250

Equivalent: N/A

Performance: Best

Actual Size: Actual Size

Brand: Accumulair

Item # FI16X21A

$22.43

Min Qty: 2

Order Options

Efficiency: APR 1950

Equivalent: Merv 13

Performance: Best

Actual Size: Actual Size

Brand: Accumulair

Item # FD16X21A

$19.79

Min Qty: 2

Order Options

Efficiency: APR 1550

Equivalent: Merv 11

Performance: Better

Actual Size: Actual Size

Brand: Accumulair

Item # FA16X21A

$14.51

Min Qty: 2

Order Options

Efficiency: APR 650

Equivalent: Merv 8

Performance: Good

Actual Size: Actual Size

Brand: Accumulair

Item # FB16X21A

$11.87

Min Qty: 2

Order Options

Efficiency: Carbon

Equivalent: N/A

Performance: N/A

Actual Size: Actual Size

Brand: Accumulair

Item # FO16X21X1A

$19.79

Min Qty: 2

Order Options

The manufacturer has discontinued the MERV 6 / APR 450 filters from their line up, our suggested replacement is the MERV 8 / APR 650 Gold filter, you may see the Emerald MERV 6 / APR 450 still on the website, we are actively removing that MERV/APR

** The typical ship time for orders is now around 15 to 20 business days **

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16x21x1

Air Filter

Efficiency

APR 2250

APR 2250

APR 1950

APR 1550

APR 650

Carbon

Equivalent

N/A

N/A

Merv 13

Merv 11

Merv 8

N/A

Performance

Best

Best

Best

Better

Good

N/A

Actual Size

15.5x20.5x1

Actual Size

Actual Size

Actual Size

Actual Size

Actual Size

Brand

Accumulair

Accumulair

Accumulair

Accumulair

Accumulair

Accumulair

Item #

FI16X21

FI16X21A

FD16X21A

FA16X21A

FB16X21A

FO16X21X1A

Purchase

$22.43

Min Qty: 2

$22.43

Min Qty: 2

$19.79

Min Qty: 2

$14.51

Min Qty: 2

$11.87

Min Qty: 2

$19.79

Min Qty: 2

Product Page

16x21x1

Air Filter

Efficiency: APR 2250

Equivalent: N/A

Performance: Best

Actual Size: 15.5x20.5x1

Brand: Accumulair

Item # FI16X21

$22.43

Min Qty: 2

Efficiency: APR 2250

Equivalent: N/A

Performance: Best

Actual Size: Actual Size

Brand: Accumulair

Item # FI16X21A

$22.43

Min Qty: 2

Efficiency: APR 1950

Equivalent: Merv 13

Performance: Best