Horizontal/sidewall vent kit for 2700ES tankless water heater models. Kit includes 1 each; 3'' x 12'' and 3'' x 18'' stainless steel gasketed pipe, adjustable through the wall thimble to accommodate wall thicknesses from 4-1/4'' to 7'', 90 stainless steel gasketed elbow, gear clamp, exhaust termination hood with 3'' x 10'' sleeve, and fresh air intake hood with 3'' x 10'' sleeve. When using the fresh air intake hood bringing fresh air from the outside, the fresh air intake pipe must be 3'' rigid PVC or aluminum.