Evolution Aqua 4" Air Diffuser Bottom Drain

4” Aerated  Bottom Drain

This 4" Aerated Bottom Drain is made of heavy duty Schedule 80 PVC. It features both a 4" horizontal pipe fitting and a 1" side-mounted aeration pipe fitting to make plumbing the aeration simpler. The center stand pipe can be adjusted, threading to the underside of the aeration plate and gluing to the bottom of the drain base. Includes base, stainless steel screws, liner ring and aeration disc with plate.

• Heavy Duty Schedule 80 PVC
• 4” Horizontal Pipe Fitting
• 1” Side Mount Aeration Pipe Fitting (easier application than bottom pipe fitting bottom drains)
• Center standpipe can be adjusted, threads to the underside of aeration plate and glue to the bottom of the drain base
• Includes 4” bottom drain base with 1” air inlet, stainless steel screws, liner ring, and aeration disc with a plate.
• 4″ Air Diffuser Bottom Drain #BTMDRA4L

• Free Shipping is valid for orders with a subtotal exceeding $199 and all orders will be shipped via UPS. Items purchased for delivery after 3pm will ship the following day. Items purchased for delivery after 3pm on Friday will ship Monday.
• Koi Fish only ship Monday- Wednesday. For orders placed after 3pm on Wednesday, the order will be shipped the following Monday.
• For Motor Freight (LTL) Shipments, oversized or heavy items unsuitable for traditional parcel delivery will be dispatched through a motor freight carrier, as indicated on the product page. Once the carrier receives your order, they will reach out to arrange a delivery time. An individual aged 18 or older must be present to sign for the delivery.
• You may return or exchange an unused or unopened item for a refund (excluding shipping and handling charges) within 30 days of purchase. Following 30 days, the item may be returned in exchange for a store credit. Used chemicals and fish food are not returnable. In addition, all sales on Japanese Koi are final and non-refundable. Should you have any questions or concerns when your fish arrive, please call 908-420-9908.