Option to send FX slot pre filter

We've seen some great improvements from these little filter covers An easy fix you can do

Protect Your Health and Home: FilterLock seals one inch furnace and AC filter slots to improve indoor air quality and reduce utility bills

filter slot cover FilterLOCK seals furnace and AC air filter slots up to 25-in · Overlapping magnetic 2-piece design holds FilterLOCK securely in place on top or side of metal

amrita vishwa vidyapeetham slot booking 2024 Buy BOOSTY 52mm Color Filter Set Lens Accessory Filter Kit Blue Yellow Orange Red Green + Lens Cap + 6 slot Case for Nikon D7100 D7000 D5200 D5100 D3200