Dometic SK4 Service Hatch 375x305

A compact 375 x 305 mm Dometic SK4 exterior service hatch for caravans and motorhomes, commonly used for bathroom lockers, cassette compartments and other small service points.

Why This Product

This is the smallest hatch in the SK4 range, moulded from the same weatherproof ASA as the larger sizes. It's often fitted where a caravan's bathroom or toilet-cassette area needs a small exterior access point, though it doesn't carry the dedicated cassette-toilet ventilation built into Dometic's SK5 range. It clips into a correctly sized cut-out without screws and locks with its own integrated multi-point mechanism.

Key Features

• Moulded from weatherproof ASA plastic
• Clips into the cut-out without screws, for a clean flush fit
• Can be mounted horizontally or vertically
• Closes with an integrated multi-point locking system, operated by key
• Compact 375 x 305 mm size for smaller lockers and service points

Ideal For

• Replacing a cracked, sun-damaged or broken 375 x 305 mm SK4 hatch
• Adding a small lockable service point to a bathroom locker or storage bay
• Restoring keyed security after an old lock has failed
• Matching existing SK4 hardware elsewhere on the same vehicle

Local Support from 4Matt Campers

We're based in Bellville, Cape Town. Because this hatch is a direct size-for-size replacement rather than an adjustable fit, measure your existing 375 x 305 mm cut-out and contact us to confirm fitment before ordering.

Technical Specifications

• Nominal Size: 375 x 305 mm
• Cut-out Size: 375 x 305 mm
• Clear Opening (interior): 335 x 265 mm
• Material: Weatherproof ASA plastic, spray cast
• Wall Thickness Range: 23-32 mm
• Lock Type: Integrated multi-point locking system, key-operated
• Mounting Method: Screw-free clip-fit; horizontal or vertical

What's Included

• SK4 service hatch unit with integrated frame and multi-point lock
• Key(s) for the lock
• Fitting instructions

Optional Fitment / Upgrade Notes

This hatch is sold as a direct opening-for-opening replacement, so your existing cut-out must match 375 x 305 mm exactly. Dometic lists a compatible wall thickness of 23-32 mm for this size, so check your panel falls within that range, and make sure the cut-out edge is clean and flat so the moulded frame seats and seals properly.

Complete Your Setup

Browse caravan toilet & sanitation parts · Browse other caravan windows, vents & rooflights · Shop caravan & trailer spares

FAQ

Will this fit my existing hatch opening?
Only if your current cut-out measures 375 x 305 mm exactly — this is a direct size-for-size replacement, not an adjustable hatch, so measure first or contact us to confirm.

Does this include toilet-cassette ventilation like the SK5?
No — this SK4 hatch is a plain service hatch. If you need built-in ventilation for a cassette-toilet compartment, Dometic's SK5 range is designed for that.

Does it come with a key?
Yes — the integrated multi-point lock is supplied complete with its key.