Specifications include, but are not limited to: Pricing shall hold for one year beginning May 1, 2024. Kor-N-Seal or Kent Seal is a sample of approved product, you may offer another product that is an equal, list your product here. 4' I.D. Manholes & Catch Basins (5" sidewalls) - Ship Lap must be UP, as well as taper and diameter must conform with units in our inventory. Flat Top - 2' Concentric Cone, 4' Eccentric Cone, 3' Eccentric Cone, 2' Eccentric Cone, 1' Barrel Section, 2' Barrel Section up to 4 cored holes if required, 3' Barrel Section up to 4 cored holes if required, 4' Barrel Section up to 4 cored holes if required, 2' Base Section, 3' Base Section, 4' Base Section; "F" Catch Basins - 2' Square - 2' High w/1 Hole, 3' High w/1 Hole, 4' High w/1 Hole, 5' High w/1 Hole, 6' High w/1 Hole...