14x18 x 1 In. Fiberglass Air Filter, 30 Days | True Value
14x18- AIRTEVA Furnace Filter & 4-Pack of BioPleat media
Nordic Pure 14x18x1ExactCustomM10+C-12 MERV 10 + Carbon AC Furnace Filters, 14 x 18 x 3/4 (14 x 18 x 0.75), 12 Piece - Replacement Furnace Filters - Amazon.com
US Home Filter SC40-14X18X1 MERV 8 Pleated Air Filter (12 Pack), 14" x 18" x 1" - Replacement Furnace Filters - Amazon.com