Durable and reliable stainless steel grilles for manholes… because safety is paramount for your engineering plan.
Keeping entrances to underground maintenance and public utilities locked down tight is extremely crucial. Prevent accidents and keep utility holes safe and secure from unauthorised access with IMPACT Safety Grilles.
Impact Engineering is a New Zealand owned and operated manufacturing engineering company based in Tauranga, Bay of Plenty. We are a preferred supplier for national distributors, contractors, and local councils. We’ve manufactured over 15,000 grilles for clients across New Zealand – and counting!
Browse our most popular safety grille types
Impact Engineering is committed to innovative designs and superior quality that lasts.
All safety grilles are manufactured using Grade 316L stainless steel for durability that stands the test of time.
Patented ‘Expand and Lock’ design offers quick and easy installation and requires no modification to the manhole castings.
Easy to install, our grilles saves you time and money.
For enhanced durability, all welds are passivated in an acid bath before final assembly and quality control.
Have peace of mind knowing your grille won’t give way. Load tested to 1000kg; all manhole safety grilles meet AS3996 Class A Load Classification Standard.
Manhole protection grilles come in a variety of sizes to fit existing frames as well as the latest hinged lids and non-rock heavy-duty castings.
Manhole covers and grilles can also be retrofitted to specific requirements.
A 2.5mm anti-theft cable comes standard to deter theft and vandalism while ensuring grille is re-installed before the lid is closed.
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Impact Engineering has a separate and specialised manufacturing plant that can produce huge numbers of grilles to meet engineering requirements.
Find out more about our range of safety grilles and other services.