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 Air Filters (2-Pack)

MERV 8 Pleated Filters (2-Pack)

Filterbuy

Product Review Score

4.51 out of 5 stars

183 reviews

SGD 89.30

17.5x21x5 MERV 8 Pleated Air Filter

MERV 8 Pleated Filter

Filterbuy

Product Review Score

4.41 out of 5 stars

34 reviews

SGD 71.44

Clean Comfort 20" x 20" x 4.5" MERV 11 Filters (2-Pack)

20"x20"x4.5" MERV 11 Filters (2-Pack)

Product Review Score

4.65 out of 5 stars

119 reviews

SGD 92.18

SpiroPure MERV 8 Pleated Air Filters (6 Pack)

SpiroPure MERV 8 Air Filters

Spiropure

Product Review Score

4.98 out of 5 stars

67 reviews

SGD 63.12

18x21x1 MERV 8 Pleated Air Filters - 4-Pack

18x21x1 MERV 8 Air Filters - 4-Pack

Filter King

Product Review Score

4.39 out of 5 stars

68 reviews

SGD 63.08

MERV 11 Allergen Defense Air Filter 17.5x21

MERV 11 Allergen Air Filter

Filterbuy

Product Review Score

4.1 out of 5 stars

66 reviews

SGD 75.35

4-Pack MERV 8 4.5x21 Pleated Air Filters

4-Pack MERV 8 Air Filters

Filter King

Product Review Score

4.37 out of 5 stars

25 reviews

SGD 63.59

17x21x1 MERV 8 Pleated Air Filters (2-Pack)

17x21x1 MERV 8 Air Filters

Filterbuy

Product Review Score

4.77 out of 5 stars

208 reviews

SGD 42.57

17x21x1 MERV 8 Pleated Air Filters - 2-Pack

17x21x1 MERV 8 Filters - 2-Pack

Filter King

Product Review Score

4.73 out of 5 stars

11 reviews

SGD 37.87

17x21x1 MERV 11 Air Filters - 2-Pack

MERV 11 Air Filters - 2-Pack

Filterbuy

Product Review Score

4.35 out of 5 stars

185 reviews

SGD 45.86

Filter King 17.5x21x1 MERV 8 Air Filter Pack

MERV 8 Air Filter Pack

Filter King

Product Review Score

4.17 out of 5 stars

91 reviews

SGD 63.12

17.5x21 MERV 11 Air Filter 3-Pack

17.5x21 MERV 11 Filter Pack

Filterbuy

Product Review Score

4.32 out of 5 stars

118 reviews

SGD 73.56