Further technical information such as composition and manufacture, size and weight, performance and sitework...

Further technical information such as composition and manufacture, size and weight, performance and sitework...

Harmer Floor drains, in powder-coated aluminium, are suited to virtually any interior drainage application, and all types of flooring. They are available trapped or untrapped, with vertical or horizontal 110mm spigot connection, with or without side inlets, and for connection from sink, bath, and shower wastes. An extensive range of round and square grates is available in stainless steel or nickel bronze, each with a choice of alternative surface finishes.

The compact Harmer Shower drain is available with vertical spigot for installation in pre-cast or pre-stressed concrete-floor systems. The horizontal spigot version, overall height 158mm, is ideal for installation in timber floors, where it can fit unobstrusively within the floor void. All drains have a clamping collar to form a leak-proof junction with sheet flooring or DPM, where tiled finishes are required. Tile-grate kits are available in coated aluminium, machined stainless-steel or machined nickel bronze.

Harmer Linearis is a range of sleek, contemporary channel drains and shower gullies, with a choice of channel size, drain body and drain cover for shower and wet room applications.

Harmer Kessel floor drainage and backflow drains provide a choice of plastic drainage systems for specialised applications, with a complete solution to all problems of interior and exterior floor drainage and backflow control. Modular components give the flexibility to create a variety of practical solutions for specific drainage requirements.

Composition and manufacture

Harmer Floor and Harmer Shower drains are manufactured in die-cast aluminium, for corrosion resistance and durability. Harmer Linearis is made from ABS and stainless steel. Harmer Kessel is manufactured from a range of plastics to suit the context of use.


Contact Alumasc for comprehensive technical advice and installation guidance.


Aluminium, the predominant material used in the manufacturing of Harmer products, is 100% recyclable, and the recycling process uses only around 5% of the energy required for production.

View Gullies and gratings: Harmer Floor, Harmer Shower, Harmer Linearis, Harmer Kessel Product Entry
Harmer Drainage

Harmer Drainage

Alumasc's Harmer range provides a single source for innovative drainage solutions that are designed to perform, engineered to last. For rainwater drainage, Harmer systems provide a total solution from roof outlet to below ground drainage. For...
View company profile
T(01744) 648400
F(01744) 648401
WVisit Harmer Drainage's website
 Alumasc Exteriors, White House Works, Bold Road, Sutton, St Helens, Merseyside, WA9 4JG

Products by this Company

Make an enquiry