HIDE DRAIN COVER FLOW RATE GUIDE
Improve your design aesthetics with HIDE exterior drain cover solutions. Effortless elegance enhancing your hardscape.
USA Flow Rate Guide - Technical Explanation:
Disclaimer: The flow rate through a slot drain is influenced by the slot’s cross-sectional area and the hydraulic conditions, including the slope and roughness of the channel. In this estimation, we utilised standard flow rates for a known slot width and adjusted proportionally based on the given slot dimensions. For precise flow rate determination, it’s recommended to perform detailed hydraulic calculations that consider site-specific parameters or to consult with a drainage engineer.
The following Flow Rates are calculated and can be downloaded below:
- 12.5" Square Drain Cover (USA/Canada)
- 26" Square Drain Cover (USA/Canada)

Hidden drainage solutions:
The specific type of drain and its application will depend on the location, purpose, and local building codes. Here are some typical applications of a HIDE Landscape Drain Cover applications:
- Patios, stairs and steps
- Balconies and rooftop terraces
- Outdoor entertainment areas
- Sports Courts and walkways
- Gardens and landscaped areas
- Pool Decks and retaining walls
- Artificial grassed courtyards
- Wet-pour concrete kits available. Click here to view

Key Features
- Australian-made and owned
- Discrete and concealed key access - you won't even notice it's there!
- 5mm clearance on all sides for optimal drainage capabilities.
- Inconspicuous locking system with HIDE's proven keyway safety access.
- Concrete compatible @ 1.6" depth
- 10-year stainless steel warranty (USA).
- Conforms to Pool Safety Standards.
- The lid cannot be lifted without the safety key.
Concrete Drain Covers

12.5" concrete compatible Drain Cover, suitable for wet-pour concrete installations; including exposed aggregate.

Available in 2 sizes and 40mm depths for wet-pour concrete application.

Hide any unsightly drains with HIDE Drain Covers, you won't even know it is there!
Safe practices and care required
- Suitable for PEDESTRIAN TRAFFIC only.
- Never allow any contact with ACID or CHEMICAL WASH by the contractor or homeowner.
Consider and plan installation before project commences

Consult your drain layer for site water flow and the most suitable sized HIDE drain cover and style.

Fill the recess with a mortar bed then push in edge protector until it fits in with its surrounds.

Looking good right?
Set out and plan the installation to suit the finished surface. It's an aesthetic thing.
Please email me the flow rates for HIDE Drains
Contact details
At HIDE Skimmer Lids, we believe in building strong and collaborative partnerships. Should you have any questions or require further assistance, please don't hesitate to contact us. Our dedicated team is committed to providing you with the support you need to succeed.
Click here to find your local HIDE Representative
If you have any questions at all, please get in touch with Sam, Jacob, Ashley or Kyle:

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