Parson - Stainless Steel Manhole Insert

The stainless steel manhole insert is manufactured from 18 gauge, 304 stainless steel. The gasket is manufactured from closed-cell neoprene and the ventilation system utilizes one gas relief valve manufactured of a Polypropylene Ethlylene compound. The stainless steel manhole insert shall have a corrosion resistant 1" heavy weight polypropylene strap installed. The“Cadillac”of the group. Manufactured from 18 gauge, 304 Stainless Steel. Standard equipment includes 1 heavy weight polypropylene strap, 1 gas relief valve and a neoprene gasket. One Plastic Coated Stainless Steel handle pop riveted to the insert with a #6 high grade Stainless Steel rivet are also available.