Parson - Manhole Insert

PARSON MANHOLE INSERTS are manufactured from Ultra High Density, high molecular weight Polyethylene, with a finish thickness of 1/8". Ventilation is achieved by either a thru-bore or single valve. A corrosion resistant 1" heavy weight polypropylene strap is factory installed. A closed-cell neoprene gasket is available upon request. Our best selling manhole insert. Manufactured from High Density Polyethylene (HDPE). Basic style includes a heavy weight polypropylene strap. A factory installed closed-cell neoprene or cross-linked polyethylene gasket is available upon request.