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The balcony outlet provides discrete safe drainage for balconies and walkways. Supplied complete with a D-shaped flat grating, the outlet can be installed against a wall. The grating is supplied with holes to receive 50, 75 or 100 mm nominal bore rainwater downpipes. These are easily cut on site to suit the application. Balcony outlets are suitable for direct connection to cast iron pipework to BS 416 or BS EN 877 or to PVC ‘O’-ring socket pipe (75 and 100 mm outlets only).

General information

LM6 grade aluminium alloy to BS 1490

Uniclass 2015
Gravity rainwater outlets (Pr_65_50_35_37)Primary
Specification data - Gravity rainwater outlets
Product Reference

HP Balcony spigot outlet



50 mm nominal bore, flat D-shape grating.


75 mm nominal bore, flat D-shape grating.


100 mm nominal bore, flat D-shape grating.

Contractor's choice

As drawing ___


Type and direction to suit pipework with suitable adaptors and connections


BO-RR raising ring

115 mm high raising ring for balcony outlet.

Contractor's choice

As drawing ___

Standard product features


LM6 grade aluminium alloy to BS 1490.

Secure gratings:

Gratings are secured with stainless steel fixings that require either a socket wrench or spanner for removal and replacement.

Flow rate (35 mm head over outlet body):

  • 2HP-BO: 1.7 L/s.
  • 3HP-BO: 5.0 L/s.
  • 4HP-BO: 8.4 L/s.

Area drained (rainfall intensity 75 mm/hr):

  • 2HP-BO: 81 m².
  • 3HP-BO: 240 m².
  • 4HP-BO: 403 m².


  • 2HP-BO: 2.58 kg.
  • 3HP-BO: 2.71 kg.
  • 4HP-BO: 2.77 kg.

Product Options


Gun-metal to BS 1400 available to special order. Gun-metal should be specified for use in conjunction with copper or lead-clad roofs or when connected to copper pipes.


- Raising rings:

Raising rings are used where it is necessary to raise the level of the grating above the outlet body, for example an inverted roof construction.

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