Our manhole covers cover a wide array of colors to meet your quality and installation needs - as well as providing with two load class ratings. On our round manhole covers - they are 24" interior and 31" exterior dimensions, and are 100% sealable to prevent oder / gas from leaking out. They are also B class rated for vehicle traffic up to and including 27,500 lb loads. Our square manhole covers are 24x24 and are for pedestrian use only.
All of our manhole covers come with many options for installation. They are all equipped with bolt down option - to bolt down to your concrete pad or current riser. In addition you can manually seal with Standartpark professional silicone / polymer sealant to your existing pad. Then pour or surround with your aggregate or concrete. Standartpark is the only current manufacturer of road rated PPE plastic manhole covers - only 25 lbs - and will hold your vehicle. Contact use with any questions at all!
Manhole Load Ratings
Plastic Manhole Cover
B Class - 27,500 LBS
Pedestrian Traffic / Light vehicle traffic not to exceed 27,500 LBS