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18x18x1 High-Performance Pleated Air Filter – MERV 11, Glasfloss M1118181
$250.80 per 12 pcs ($20.90 each) -
18x18x1 High-Performance Pleated Air Filter – MERV 13, Glasfloss M1318181
$476.40 per 12 pcs ($39.70 each) -
18x18x1 Performance Air Filter – Heavy-Duty, MERV 11, Glasfloss M1118181XM
$259.80 per 12 pcs ($21.65 each) -
18x18x1 Performance Air Filter – Heavy-Duty, MERV 10, Glasfloss ZLP18181
$168.60 per 12 pcs ($14.05 each) -
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18x18x2 High-Performance Air Filter – Heavy-Duty, Glasfloss HVP18182XM
$230.40 per 12 pcs ($19.20 each) -
18x18x2 High-Performance Pleated Air Filter – MERV 11, Glasfloss M1118182
$286.20 per 12 pcs ($23.85 each) -
18x18x2 High-Performance Pleated Air Filter – MERV 13, Glasfloss M1318182
$559.44 per 12 pcs ($46.62 each) -
18x18x2 Performance Air Filter – Heavy-Duty, MERV 11, Glasfloss M1118182XM
$297.00 per 12 pcs ($24.75 each) -
18x18x2 Performance Air Filter – Heavy-Duty, MERV 10, Glasfloss ZLP18182
$179.88 per 12 pcs ($14.99 each) -
18x18x2 High-Performance Air Filter – Self-Supporting, Glasfloss ZXP18182
$167.88 per 12 pcs ($13.99 each) -
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18x20x1 High-Velocity Pleated Air Filter – Z-Line, Glasfloss HVP18201
$176.52 per 12 pcs ($14.71 each) -
18x20x1 High-Performance Air Filter – Heavy-Duty, Glasfloss HVP18201XM
$186.60 per 12 pcs ($15.55 each) -
18x20x1 High-Performance Pleated Air Filter – MERV 11, Glasfloss M1118201
$235.20 per 12 pcs ($19.60 each) -
18x20x1 High-Performance Pleated Air Filter – MERV 13, Glasfloss M1318201
$451.80 per 12 pcs ($37.65 each) -
18x20x1 Performance Air Filter – Heavy-Duty, MERV 11, Glasfloss M1118201XM
$244.20 per 12 pcs ($20.35 each) -
18x20x1 Performance Air Filter – Heavy-Duty, MERV 10, Glasfloss ZLP18201
$117.48 per 12 pcs ($9.79 each) -
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18x20x2 High-Performance Air Filter – Heavy-Duty, Glasfloss HVP18202XM
$190.68 per 12 pcs ($15.89 each)