This Replacement filter cartridge can be used in 34 square feet Marquis Spa (old style), Marquis Corp, hide away hot tubs, amish country and everyday hot tubs. The technical specifications of AK-4016 are in respect with Filbur# FC-3623, Pleatco# PPM35TC, Unicel# C-5423 and OEM# 20045. The top of the replacement filter cartridge is closed and the bottom has a hole of 1 5/8 inch. The easy to install replacement filter cartridge is 5 3/16 inch wide and 11 15/16 inch long.
Interchangeable Part Numbers