Pennine Top Hat Units – Rigid & Flexible (110mm & 160mm) grasstop access cover 250ml for larger installations

250ml for larger installations

and a sufficient mortar bedding

Suitable for use with EcoGrid and other permeable systems

EG9060/100

Modular and scalable – Stackable for custom layout designs and adaptable tank volumes

Pennine Top Hat Units – Rigid & Flexible (110mm & 160mm) grasstop access cover 250ml for larger installationsPennine Top Hat units are preformed sleeves designed to create an airtight seal around service pipe penetrations. Available in rigid polypropylene or flexible TPE with a Jubilee Clip, these units provide a reliable barrier in applications such as attenuation tanks or pipe entries through membranes. Lightweight, durable, and simple to install, theyre manufactured to ISO 9001 standards using recycled plastics and are fully recyclable at end of life.