Similar sizes

{{ filter.size }} (Actual size) Air Filter | {{ filter.type }} | ${{ money(calculatePricePerQuantity(filter_count, filter.prices)) }}

{{ filter_count }} Pack of

13x21x4 Air Filter

AC Furnace Air Filter 13x21x4-Inches

1. Select Filter Quality

Standard

Good

Better

Odor Eliminator

2. Select Quantity

Order more for less

Buy {{ index === selectedFilter.prices.length-1 ? '12' : quantity }} for ${{ selectedFilter.prices[quantity-1] }} ea.

Select the number of filters

+ -

FREE SHIPPING
ORDERS 2 OR MORE

Added Promotional Discount*

FREE SHIPPING

(${{ pricePerQuanity() }} / Filter ) ${{ money(priceWithoutDiscount()) }} Save ${{ money(savePrice()) }} ({{ savePercent()}}%)

OR

Sorry, Product unavailable

Product Description

Brand: Filter King
Filter size: 13x21x4
Actual Size: 13 x 21 x 4
4-Inch Filter
MERV 8 Filter Rating
Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses
Residential / Commercial Use