Method # 1:
Give us the manufacturer and model number.
Method # 2:
You can measure the outside diameter, overall length (including the fitting), the inside diameter
of both top and bottom(Please be precise).
Indicate if top is open or closed and if it has any special configuration.
Method # 3:
Call us for assistance.
FOR SKINS ONLY
Submit "Filt-r-Skin" Model number, example: DF-417
.
WHAT SIZE???