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330 PERFORATED GAS COLLECTION PIPES

• Manufacturer: Contractor's choice.

- Product reference: Contractor's choice.

• Material: High-density polyethylene (HDPE), perforated.

• Size: Submit proposals.

340 GAS COLLECTION HEADER PIPEWORK
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.
• Material: Perforated PVC-U.
• Outside diameter:
- Collection pipework: Submit proposals.
- Header pipework: Submit proposals.

350 GAS RETARDANT MEMBRANE
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.
• Material: High density polyethylene membrane.

360 GEOCOMPOSITE VENTING LAYERSgenerally
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.
• Material: HDPE cuspated membrane.

370 PLASTICS DEPRESSURIZATION SUMPS
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.
- Material: High density polyethylene.

380 DEPRESSURISATION FANS
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.

390 WALL VENT OUTLETS

• Manufacturer: Contractor's choice.

- Product reference: Contractor's choice.

• Type: Submit proposals.

• Size: Submit proposals.

• Colour: Submit proposals.

• Accessories/ Features: Drainage outlet for rainwater.

395 GROUND LEVEL VENT OUTLETS
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.
• Type: Flush.

410 VENTING PIPEWORK - VERTICAL 6118-AEW-XX-XX-NBS-A-01
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.
• Material/ Standard: Contractor's choice.
• Size: Submit proposals.
• Accessories: Cages for tops of pipes.

RotF generic (intermediate) NBS 2014