Sales Enquiries | +61 2 9828 2660

Sales Enquiries | +61 2 9828 2660


Concrete Infill Covers

Concrete Infill Covers are the most popular Gastight Access Cover and remains the staple in the Mascot Engineering range.  Our first notable project in Sydney was NSW Parliament House… a project that was a turning point in Mascot’s supply of covers given the quantity of covers required coupled with the high profile nature of the project.  Since then, Mascot infill Covers have been relied upon for residential, commercial, industrial as well as civil and critical infrastructure projects around Australia.

Rectangular and square covers have carefully machined horizontal and vertical faces of the iron cover and frame components to produce a cover assembly that doesn’t rock when traffic passes over.  Designed with high performance ribbing for infilling with concrete or pavement material that is sealed once infilled, each product is designed in accordance with the standards and load tested to the requirements of EN124.

Security & Non-Rocking

All Mascot Engineering Access Covers require lifting keys to gain access, however they are also fitted as standard with a boltdown facility to help prevent unauthorised removal of the cover. The bolts are included and also allows our clients to fit additional security type bolts if required.

Our range of gas and airtight iron covers are machine finished to their matching frame to extremely tight tolerances and if installed level and as per our instructions will be non-rocking.

Gastight Concrete Infill Covers Range

Mascot Engineering’s range of Covers are available as C250, D400 and F900. Select the range from the below boxes.


2 Part, 3 Part and Continuous Trench Run

Mascot’s range of heavy duty Gastight Concrete Infill Covers can be arranged in any configuration to suit the requirements of your project. This includes single part, 2 Part, 3 Part, a continuous trench run, or a multipart configuration.

Multipart Concrete Infill Covers

Multipart units combine standard size Gastight Covers in multiple rows, generally when the clear opening exceeds 1200mm in both directions.

Multipart Covers can be designed to suit all shapes and sizes based on your specification. The team at Mascot Engineering will design your Multipart Cover and provide the relevant engineering support as needed.

Mascot Engineering’s system relies on a number of ‘rows’ of covers divided by fixed or removable beams to achieve the desired clear opening. The beam size will depend upon the load rating as well as the beam’s length. In all cases unless requested, beams are supplied cut to length and galvanised.


Submit your Enquiry

Please enable JavaScript in your browser to complete this form.