Round and square compost bin filters: filters absorb odors produced by composting bins, let your kitchen smelling fresh and clean, combination of two shapes filters works better. Easy to use: just shoved the replacement filters into the compost bin lid, the square filters will also work in round lid because the rim will hold it up fine. Material: replacement filters are made of activated-charcoal, please do not rinse and filters can provide a better effect. Dimension: square shape filters side length is 4.75 inches,round shape filters diameter is 6.75 inches, compatible with most stainless steel compost pails, also can be cut into any shape according to actual size. Package includes: 6 pieces of round shape and 6 pieces of square shape compost bin filters, filters should be replaced every 2-3 months, this pack enough gives you min 1 year or more time supplies.
Specifications:
Square shape filter side length: 4.75 inches
Square shape filter thickness: 5 mm
Round shape filter diameter: 6.75 inches
Round shape filter thickness: 5 mm
Material: activated-charcoal

Package includes:
6 x Round compost bin filters
6 x Square compost bin filters

Note:
Filter contain charcoal, please do not rinse.