Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

18 x 18 x 1 Air Filters

16 results

Filtrete 
18-in W x 18-in L x 1-in MERV 11 1085 MPR Allergen Defense Extra Electrostatic pleated Air Filter 2 -Pack

Find My Store

for pricing and availability

4.7
9391
Dimensions:17.7L x 17.7W x 0.8T
Air Filter Longevity:3 month

Filtrete 
18-in W x 18-in L x 1-in MERV 13 1900 MPR Premium Allergen, Bacteria and Virus Electrostatic pleated Air Filter

Find My Store

for pricing and availability

4.8
4099
Dimensions:17.7L x 17.7W x 0.8T
Air Filter Longevity:3 month

Filtrete 
18-in W x 18-in L x 1-in MERV 5 300 MPR Basic Dust and Lint Electrostatic Air Filter 3 -Pack

Find My Store

for pricing and availability

4.7
1140
Dimensions:18L x 18W x 0.8T
Air Filter Longevity:3 month

Filtrete 
18-in W x 18.0-in L x 1.0-in MERV 12.0 1500 MPR Allergen, Bacteria and Virus Electrostatic pleated Air Filter

Find My Store

for pricing and availability

4.8
3184
Dimensions:18L x 18W x 1T
Air Filter Longevity:3 month

Project Source 
18-in W x 18-in L x 1-in MERV 8 Electrostatic pleated Air Filter 3 -Pack

Find My Store

for pricing and availability

4.4
19
Dimensions:17.7L x 17.7W x 0.8T
Air Filter Longevity:3 month

Air-Care 
18-in W x 18-in L x 1-in Washable MERV 8 Electrostatic Air Filter

Find My Store

for pricing and availability

4.5
139
Dimensions:18L x 18W x 1T

Filtrete 
18-in W x 18-in L x 1-in MERV 11 1085 MPR Allergen Defense Extra Electrostatic pleated Air Filter

Find My Store

for pricing and availability

4.7
2233
Dimensions:17.7L x 17.7W x 0.8T
Air Filter Longevity:3 month

Filtrete 
18-in W x 18-in L x 1-in MERV 5 300 MPR Basic Dust and Lint Electrostatic Air Filter

Find My Store

for pricing and availability

4.5
369
Dimensions:18L x 18W x 0.8T
Air Filter Longevity:3 month