LD Standard Frame - 3 m


The Big Foot Systems Light Duty range offers an array of solutions to support a variety of air handling units and air conditioning systems. Frame kits for most major manufacturer’s mini splits, heat pumps and VRV/ VRF units are available from stock.

Big Foot Splits Modular Frame:

For supporting air conditioning plant on flat roofs. As standard There are three basic modular frameworks available in 1, 2 and 3 m versions. The modular frameworks come with 305 mm or 450mm feet which are provided with anti-vibration mats. The frame is constructed from 40 x 40 mm box section. For heavier loads refer to Big Foot's HD range of products.

Big Foot VRV/ VRF Modular Frame:

Developed for the siting of most major manufacturer's VRV/ VRF systems. This lightweight and easily assembled Modular Frame system is quick to install and provides a robust and secure method of support.

Features/ benefits:

  • Non penetrative load management.
  • Cost effective, pre-fabricated support system.
  • Versatile modular frameworks.
  • Quick to install, robust and secure.
  • Optional independent warranty available.


Constructed to:

  • BS8000-4: Workmanship on building sites. Code of practice for waterproofing.
  • BS6229: Code of practice for flat roofs with continuously supported coverings.
  • BS EN 1107-1: Flexible sheets for waterproofing. Determination of dimensional stability.
  • BS EN 1850-1: Determination of visible defects.
  • Building Regulations (E & W) Part L: Conservation of Fuel and Power.

General information


Frame: Hot dip galvanized carbon steel, Feet: Nylon 6 B601L 30% glass fibre filled, Anti-vibration mat: SBR-recycled rubber

Uniclass 2015

Pr_80_77_27_73 Roof equipment supportsPrimary

Specification data - Roof equipment supports

Product Reference

Big Foot Splits Modular Frame, B6075

1 m.

Big Foot Splits Modular Frame, B6077

2 m.

Big Foot Splits Modular Frame, B6078

3 m.

Big Foot VRV/ VRF Modular Frame

Standard product features


- Plastic foot:

Nylon 6 B601L 30% glass fibre filled.

- Anti-vibration mat:

SBR-recycled rubber. Bound using a ratio of high quality moisture curing polyurethane pre-polymer. BS 7188 and BS 5696-3.

- Metal framework:

  • Hot dip galvanized carbon steel: BS EN 10219-1. Welding standard: BS EN ISO 15614-1.
  • Galvanizing: BS EN ISO 1461.
  • Salt mist testing: BS EN 60068-2-52
  • Test Kb severity 1.

Product Options

Product reference:

- B6075:

  • Height adjustment: 255–360 mm.
  • Overall size (l x w): 1650 x 1250 mm.
  • Maximum loading: 480 kg.

- B6077:

  • Height adjustment: 255–360 mm.
  • Overall size (l x w): 1650 x 2250 mm.
  • Maximum loading: 720 kg.

- B6078:

  • Height adjustment: 255–360 mm.
  • Overall size (l x w): 1650 x 3250 mm.
  • Maximum loading: 960 kg.

- VRV/ VRF Modular Frame:

Angled AV mats:

The solution to sloping roofs. 2.5º and 5º AV mats are available for 450 mm feet.

Leg height adjustment:

255–360 mm: Floor to top of framework (255–560 mm: Stepped roof option). Large stud (440 mm) can be purchased as an extra individual component if required.

Linear adjustment:

The cross-bars which support the condenser units can slide along the plain bars into the position required, then are locked securely in place.

Condenser clamps:

The repositionable clamps located on both sides of the cross-bars, locking down onto the feet of the condenser units as they are tightened.

Leg and bracket positioning:

The leg and bracket are usually positioned outside the framework, but can be positioned inside if the is an obstruction or the load dictates.

Feet fleeces:

Recommended for use on PVC membrane roof surfaces to prevent migration of plasticizers.

Digital objects

Platform Compatible Version Certified to




Revit 2016


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