Hayward H300FDN/P Universal H-Series Vertical Vent Adapter Raypak Same water velocity through all

Same water velocity through all tubes for faster heating

This side-mount track is screwed to the pool walls using 1" self tapping tek screws w/hex head

In-ground pool/spa combinations

Sizes 2" to 8" PVC body and PVC Disc Only

Hayward H300FDN/P Universal H-Series Vertical Vent Adapter Raypak Same water velocity through allProduct Description Hayward Universal Forced Draft Negative Vertical Vent Kit Adapter for H300FDN and H300FDP. Hayward Item Code: UHXNEGVT13008 (Adapter Only) This vent kit has been discontinued Features Genuine Hayward Vent Adapter. This vent adapter kit is to be used under negative pressure which is thru roof vertically. Hayward heaters require 1 square inch per 1,000 BTU of fresh air and combustion air supply. Please respect set backs on each side