For this great price, the Deschem 2000ml Glass Suction Filtration Kit 500ml Buchner Funnel & 2L Erlenmeyer Flask comes widely respected and is a popular choice amongst most people.
1# Coarse Filter:Filtration Pore Diameter is 80-120 Micron
2# Coarse Filter:Filtration Pore Diameter is 40-80 Micron
3# Coarse Filter:Filtration Pore Diameter is 15-40 Micron
4# Coarse Filter:Filtration Pore Diameter is 5-15 Micron
5# Coarse Filter:Filtration Pore Diameter is 2-5 Micron
6# Coarse Filter:Filtration Pore Diameter is <2 Micron