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Our sales and technical team have over 20 years’ experience working with the industry leading rainwater systems available in the UK. -
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Our aluminium, steel, cast iron, plastic & GRP rainwater systems are all sourced from the leading manufacturers in the UK to ensure they are of the highest quality.
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Cast Iron Outlet Accessories and Pipe Connections

A comprehensive range of accessories for the Harmer Cast Iron Roof outlet system is available for successful installation of the Harmer rainwater outlets in most types of roof construction. The range includes gravel guards, underdeck clamp fixtures, overflow outlets, threaded adaptors, pipe couplings and metal deck support plates.
Click here for Aluminium Roof Outlets or Cast Iron Roof Outlets or Insulated Roof Outlets
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Available
Harmer Roof Detail Outlet Adaptor Coupling
Detail Outlet Adaptor Coupling, available in one size 75mm, used to connect two pipes with OD from 75-76mm to 83 - 84mm
0
From
Price
£21.23
Ex VAT£25.48 Inc VAT
Available
Harmer Roof Detail Outlet Duo Coupling
Detail Outlet Duo Coupling, available in three sizes 50mm, 100mm & 150mm
0
From
Price
£13.45
Ex VAT£16.14 Inc VAT
Available
Harmer Roof Detail Outlet Two Part Ductile Iron Coupling
Two Part Ductile Iron Coupling, available in three sizes 50mm, 100mm & 150mm
0
From
Price
£27.23
Ex VAT£32.68 Inc VAT
Available
Harmer Roof Detail Overflow Outlet
Roof Detail Overflow Outlet, available in two size 50/75mm & 100/150mm
0
From
Price
£178.68
Ex VAT£214.42 Inc VAT
Available
Harmer Roof Detail Push Fit Parapet Downspout
Roof Detail Push Fit Parapet Downspout, available in Cast Iron or Aluminium
0
From
Price
£167.47
Ex VAT£200.96 Inc VAT
Available
Harmer Roof Galvanised Steel Metal Deck Support
Galvansied Steel Metal Deck Support, available in sizes 50mm, 75mm, 100mm & 150mm
0
From
Price
£62.09
Ex VAT£74.51 Inc VAT
Available
Harmer Medium and Large Sump Gravel Guard
Medium & Large Sump Gravel Guard, available in sizes 200mm x 150mm, 200mm x 200mm, 300mm x 150mm & 300mm x 200mm
0
From
Price
£45.12
Ex VAT£54.14 Inc VAT
Available
Harmer Medium and Large Sump Underdeck Clamp
Medium & LargeSump Underdeck Clamp, available in Mild Steel and Stainless Steel
0
From
Price
£26.85
Ex VAT£32.22 Inc VAT
Available
Harmer SML Cast Iron Soil & Waste Reducer
SML Cast Iron Soil & Waste Reducer, available in a range of Diameters
0
From
Price
£29.03
Ex VAT£34.84 Inc VAT