The rubber door is specifically designed to fit over the water intake opening of Laguna's PowerFlo Skimmer Filter (PT1774).
Used for overwintering purposes, the door provides a tight and secure fit to prevent unwanted material from entering the skimmer filter. Made of flexible yet durable rubber material, it is designed to withstand the cold winter months.Suitable for:
Pondmaster Debris Filter
17.5"D x 1.5" thick