Discover our selection of 17.5x21x4.5 air filters, designed to enhance your indoor air quality and ensure optimal performance for your HVAC system. These filters effectively capture dust, allergens, and other airborne particles, providing a cleaner and healthier environment for you and your family. With various options available, you can find the perfect fit for your needs and enjoy prolonged equipment life and improved energy efficiency.
17.5x21x4.5 Air Filter
Discover optimal air quality and performance with our 17.5x21x4.5 air filters designed for efficiency and durability
Product List
MERV 8 Pleated Filters (2-Pack)
Filterbuy
Product Review Score
4.51 out of 5 stars
183 reviewsSGD 89.30
20"x20"x4.5" MERV 11 Filters (2-Pack)
Product Review Score
4.65 out of 5 stars
119 reviewsSGD 92.18
SpiroPure MERV 8 Air Filters
Spiropure
Product Review Score
4.98 out of 5 stars
67 reviewsSGD 63.12
18x21x1 MERV 8 Air Filters - 4-Pack
Filter King
Product Review Score
4.39 out of 5 stars
68 reviewsSGD 63.08
17x21x1 MERV 8 Filters - 2-Pack
Filter King
Product Review Score
4.73 out of 5 stars
11 reviewsSGD 37.87
MERV 11 Air Filters - 2-Pack
Filterbuy
Product Review Score
4.35 out of 5 stars
185 reviewsSGD 45.86
17.5x21 MERV 11 Filter Pack
Filterbuy
Product Review Score
4.32 out of 5 stars
118 reviewsSGD 73.56
The 17.5x21x4.5 air filter is designed to enhance the air quality in your home or office, offering efficient filtration that captures dust, allergens, and other airborne particles. With its optimal dimensions, this filter fits seamlessly into many HVAC systems, ensuring maximum performance and longevity. By regularly replacing your air filter with a high-quality 17.5x21x4.5 option, you can improve your indoor air quality and create a healthier environment for you and your family.
In addition to improving air quality, a well-maintained 17.5x21x4.5 air filter can also help reduce energy costs. A clean filter allows your HVAC system to operate more efficiently, decreasing the amount of energy required to heat or cool your space. Explore our selection of premium filters to find the right option that fits your needs and enhances your home’s air circulation.