Low Density Poly FI Tee by Antelco $2.50 13mm x 1/2'' Fi - $2.50 19mm x 1/2'' FI - $3.40 19mm x 3/4'' FI - $3.30 25mm x 1/2'' FI - $3.60 25mm x 3/4'' Fi - $4.10 25mm x 1'' Fi - $2.90 13mm x 1/2'' Fi 19mm x 1/2'' FI 19mm x 3/4'' FI 25mm x 1/2'' FI 25mm x 3/4'' Fi 25mm x 1'' Fi Size 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Low Density Poly FI Tee