Thundaflo's E2 system creates a continuous gap between indoors and outdoors and provides a level surface.
This prevents surface water from entering the building and also prevents capilary effect of moisture migrating up. 

Premium 316 Stainless Steel Black PVD Coated Grating

55mm Width 316 Stainless Steel Wedge-wire Grating

316 Stainless Wedge-wire Grating

75mm Width Slotted 316 Stainless Steel Grating

75mm Width Slotted 316 Stainless Steel Grating

E2 Level Threshold with FRP Grating: A low cost alternative to Stainless Steel Grating

Thundaflo's E2 Uniquie design offers the following key benefits:

Easy Installation: 

Robust Design

Superior Hydraulics

Discreet Appearance

Off the shelf Compliant with Level Entry requirements of NZBC E2/AS1 ( - Concrete Slab) and MOE Weathertightness Design Requirements for New Schools, Version 3, Sept 2020.

A. Channel minimum width of 200 mm and minimum depth of 150 mm Yes

B. Channel maximum length of 3700 mm to outlet Yes (Channels have outlets every 3 metres)

C. 1:200 minimum fall along length of channel towards a drainage outlet Yes (Built into the system, no need to scree in fall after installation. Zero gradient channel is available as an option where there is a depth restriction. e.g. Slab foundation.)

D. The channel discharging to the surface water drainage system via a sump Yes (In-line sumps are provided as an option therefore no need to install a seperate sump

E. Grating, in accordance with Tables 21 & 22, over the channel Yes (Grating is manufactured with 316 Marine Grade Stainless Steel or Fibre Reinforced Polymer)

E. Grating is supported independently of the door frame with a 
12mm continuous minimum gap from door and wall cladding Yes

F. Grating that is removable to allow access for cleaning Yes

G. Grating that is specifically designed to accommodate imposed loads Yes (The system is a robustr design manufactured from 304 & 316 stainless steel and fibre reiinforced polymer and is designed to support vehicles)

H. Grating has gaps sized to prevent the wheels of wheel chairs or mobility aids entering or being trapped Yes (8mm maximin gap in Grating) 


N.Z. Pat. Appl. No. 809326

Next: E2_Key_Features