This Floating Magnet is recommended for 3-1/4″ to 4″ aquarium wall thickness. The inner floating magnet dimensions are 6″ x 9″ x 3-1/8″ thick.
Product includes: Plastic Storage Case, Spacer Block, Instructions, and an extra Acrylic Safe Pad Set (outer magnet Felt Pad and inner magnet Algae Scrub Pad).
This product is compatible with: Replacement Pad Set (D/E), Algae Cutter Bag (E), Dozer Pad (E), Scratch Removal Kit (E).
Always clean, inspect, and test products in an inconspicuous area of the aquarium.