All filters are made in the USA  – Order Today


Premium Filters
Protects all against
Protects all against

19x21x4 – Merv 13

19x21x4 – Merv 13
AC Furnace Air Filter
Rated 0.0 out of 5
0.0 out of 5 stars (based on 0 reviews)

Select Filter Quality

Total Price
Price per filter $0
Quantity Price Per Filter
1 $0.00
2 $0.00
3 $0.00
4-5 $0.00
6-11 $0.00
12+ $0.00

Product Description

Filter Size: 19x21x4

Actual Size: 18.5×20.5×4

Actual Size Fraction : 18-1/2×20-1/2×4

Customer Reviews

Rated 0.0 out of 5
0.0 out of 5 stars (based on 0 reviews)
5 Star0%
4 Star0%
3 Star0%
2 Star0%
1 Star0%

Review this product

Share your thoughts with other customers

Top Reviews

There are no reviews yet. Be the first one to write one.

19x21x4 MERV 13 Pleated Air Filters

Welcome to a breath of fresh air with our state-of-the-art 19x21x4 MERV 13 Pleated Air Filters, exclusively available at Custom Filters Direct. Engineered with meticulous precision and designed for optimal efficiency, these filters are your ultimate solution for achieving a healthier and more comfortable living space.

Key Features:

  • Exceptional Filtration (MERV 13): Immerse yourself in superior air purification with the impressive MERV 13 rating. These filters are adept at capturing particles as small as 0.3 microns, addressing a comprehensive range of airborne contaminants. From common allergens like dust and pollen to more microscopic threats like mold spores and pet dander, enjoy thorough filtration for cleaner, fresher air.
  • Perfect Fit (19x21x4): Ensure a seamless integration into your HVAC system with the precise sizing of 19x21x4. This perfect fit guarantees optimal performance, allowing these filters to efficiently purify your indoor air and contribute to a healthier environment.
  • Pleated Design: Maximize the effectiveness of your air filtration system with the innovative pleated design of these filters. Not only does it increase the filter surface area, but it also enhances dust-holding capacity. This design innovation extends the lifespan of the filter, reducing the need for frequent replacements and ensuring a consistent, reliable performance.
  • Easy Online Purchase: Simplify your air filter shopping experience with the convenience of online purchasing from Custom Filters Direct. Browse our carefully curated selection of 19x21x4 MERV 13 Pleated Air Filters, select the perfect fit for your needs, and effortlessly complete your purchase from the comfort of your home. It’s a hassle-free process that puts the power of cleaner air directly into your hands.
  • High-Quality Construction: Trust in the durability and quality of our filters. Crafted with meticulous attention to detail, these air filters are built to last, ensuring sustained performance and reliability.


Elevate your indoor air quality effortlessly with the 19x21x4 MERV 13 Pleated Air Filters from Custom Filters Direct. Order online today and take the first step towards breathing cleaner and fresher air in your home. Experience the transformative difference that advanced filtration can make!