Filter grids are supplied in a convenient 68 cm x 40cm (27" x 16") size but they can be easily cut down to any size if required. Larger sizes can be made up by joining them together with cable ties.

Useful for homemade and professional gravity filters, Marine Keepers use this support for keeping corals and live rock. 

Dimensions:

• 27" x 16" x 1/2" thick (68cm x 40cm x 13mm) 
• Each square is approx 5/8" ( 18mm )