1201 Top Hat

Top hat collar for sealing telescopic underfloor vent, where gas protection is required. Designed for use with 1201 and 1201XL Telescopic Underfloor Ventilators.


  • When gas protection is required
  • Suitable for Radon, Hydrocarbon, Methane and CO2

Add this product to your specification on NBS or SpecifiedBy

Product Information

Top Hat

DescriptionColourProduct Code
1201 top hatBlack77120
Gastite sealing tape 10m x 100mm-GTAPE01
Girth tape 50m x 72mm-GTAPE02

  • Preformed mouldings eliminate the need for site fabrication to prevent errors through poor workmanship
  • Easy to handle, flexible, tough, durable and puncture resistant
  • Manufactured to fit Timloc 1201 & 1201XL
  • Satisfies all NHBC requirements
  • Manufactured to BS EN ISO 9001-2015
  • Complies with all relevant Building Regulations
  • Meets all relevant British Standard
  • Manufactured from medium-density polyethylene (MDPE).
  • Available in black only.
  • Cut DPC / cavity trays to work around telescopic underfloor vent.
  • Separate top and bottom sections of 1201 telescopic vent and slot 1201 top hat over either half.
  • Position 1201 top hat to required position to sit over DPC / cavity tray.
  • Unit will require tape seal for gas barrier (tape sold separately). Use gastite G-Tape01 to make seal around full flat base surface. Use girth tape G-tape02 to seal upstand to 1201 telescopic vent.
  • 425mm x 257mm x 60mm (H x W x D)
  • Order as each.
  • State product code.

Latest News