Description
Product Overview
The Glasfloss ZLP21H23E1 air filter delivers advanced MERV 10 filtration, capturing fine particles while maintaining airflow comparable to MERV 8 filters. Constructed with a robust metal frame, this filter measures 21.5 x 23.3125 x 0.875 inches (nominal size 21.5 x 23.3125 x 1 inch) and comes in a convenient 6-pack. Its white color and durable build ensure long-lasting performance in various environments, from residential homes to commercial and healthcare settings. The filter’s design supports easy installation and removal, making maintenance straightforward for users.

Usage
This air filter is compatible with air conditioners, furnaces, and air cleaners, making it suitable for a wide range of heating and cooling systems. It is ideal for use in homes, schools, commercial buildings, and healthcare facilities where clean air is essential. The filter’s MERV 10 rating ensures effective dust and allergen collection, promoting healthier indoor air quality. Regular replacement every three months is recommended to maintain optimal filtration efficiency and system performance.
Why Choose Us
Glasfloss filters are manufactured in the USA, emphasizing quality and reliability. The heavy-duty metal frame prevents buckling under pressure, ensuring consistent performance over time. With a high customer rating and best-seller status in air conditioner replacement filters, this product combines improved filtration with user-friendly features. Its balance of MERV 10 efficiency and low airflow resistance sets it apart from competitors, providing enhanced air cleaning without compromising system operation.
Key Features
- MERV 10 filtration rating for effective dust and particle collection
- Durable metal frame that resists buckling and extends filter life
- Easy to install and remove, simplifying maintenance routines
- Made in the USA with high-quality materials for reliable performance
- Compatible with air conditioners, furnaces, and air cleaners for versatile use
FAQ
What is the exact size of this filter?
The exact dimensions are 21.5 x 23.3125 x 0.875 inches, with a nominal size of 21.5 x 23.3125 x 1 inch.
How often should I replace the filter?
For optimal performance, it is recommended to replace the filter at least every three months, depending on usage and air quality.
Is this filter suitable for commercial use?
Yes, this filter is designed for residential, commercial, school, healthcare, and industrial applications, providing reliable filtration in various settings.
What does MERV 10 rating mean?
MERV 10 indicates the filter can capture small particles effectively, comparable to MPR 600-800 or FPR 5-6 ratings, improving indoor air quality.
Can I use this filter in my furnace?
Absolutely, this filter is compatible with furnaces, air conditioners, and air cleaners, ensuring broad applicability for your HVAC system.




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