Internal 55 gal. Tank Capacity Aquarium Undergravel Filters
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PENN-PLAX Clear-Free Premium Under Gravel Aquarium Filter 40/55 gallon
C $43.87or Best OfferPenn Plax Premium Under Gravel Filter System - for 40-55 Gallon Fish Tanks Clean
C $68.53C $33.09 shipping3 watchingPenn-Plax Undergravel Aquarium Filter for 40-55 Gallon Tanks – Four 11.25” X 11.
C $54.59C $32.68 shippingOnly 1 left!Penn-Plax Undergravel Aquarium Filter for 40-55 Gallon Tanks – Four 11.25” x ...
C $60.25C $32.85 shippingPenn-Plax Undergravel Aquarium Filter for 40-55 Gallon Tanks – Four 11.25” x ...
C $50.24Trending at C $54.61eBay determines this price through a machine-learned model of the product's sale prices within the last 90 days.C $32.56 shipping59 soldLees Premium Aquariums Fish tank Under Gravel Filter
C $32.89 to C $139.81C $57.45 shippingLee's Original Under Gravel Aquariums Filter available in 12 different sizes
C $15.07 to C $101.43C $30.83 shippingPenn-Plax Undergravel Aquarium Filter for 40-55 Gallon Tanks – Four 11.25” x 11.
C $51.94Trending at C $54.59eBay determines this price through a machine-learned model of the product's sale prices within the last 90 days.C $54.34 shipping