Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Main Trim Viewing Aperture Sight Glass 10/12329

Main

Main Trim Viewing Aperture Sight Glass 10/12329

Viewing aperture sight glass trim for MAIN Severn 5 and Severn 5 R boilers, part 10/12329.

Manufacturer part no.
10/12329
GC number
285-530
Showing prices

£6.94

£5.78 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The TRIM - VIEWING APERTURE/SIGHT GLASS is a Main component that provides a viewing point through the appliance casing so the flame can be inspected during servicing. It is fitted to Severn 5 series appliances, where the trim holds and seats the sight glass at the combustion viewing aperture.

Signs this part needs replacing

  • The glass is discoloured, clouded or sooted so the flame cannot be viewed clearly
  • Condensation or moisture is visible within the sight glass
  • Cracks, crazing or chips are present in the glass
  • The trim or its seating is damaged, allowing leakage at the aperture

Before you order

  • Confirm the appliance model and GC number match the Severn 5 or Severn 5 R
  • Inspect the existing sight glass and trim to establish which components need replacing
  • Check the aperture seating and surrounding casing for damage before fitting

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.