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Published product information, with original specification labels and units. A missing specification is unknown, not proof that a feature is absent.
Buying decision	Bayliss / Gabriel Ash Bayliss Mk7 Triple Spring Autovent, Gabriel Ash AC1552 View product source Product source link
Useful for	A compatible Gabriel Ash greenhouse requiring the specified Mk7 Triple Spring accessory and mounting kit.
Check first	Supplied fixings and cedar block are specified for Gabriel Ash installation; other frames need compatibility confirmation.
Published specifications	Approximate length 12 inches / 30 cm Included mounting items Stainless-steel fixings and cedar block for Gabriel Ash greenhouse Maximum stated opening Approximately 12 inches Opener Bayliss Mk7 Triple Spring Product number Gabriel Ash AC1552 Stated vent lifting capacity Up to 6 kg
Other tradeoffs	The 6 kg lift specification is not a wind-load or structural rating for the greenhouse. Shelving, staging and vent travel can obstruct operation; this is not a complete ventilation system.
Sources & model details	Published product source ↗ Research date not recorded. Full profile and supporting sources →
Put it to use	Greenhouses & protection guides and equipment → Greenhouse Ventilation Planning: What to Check Before Sizing Fans
Check current offer	View product source

These profiles summarize published information, not hands-on testing. Different products may serve different roles. Check matching measurements, the exact model and pack, and current seller terms. This comparison does not certify system compatibility or show live prices or stock.

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Bayliss Mk7 Triple Spring Autovent, Gabriel Ash AC1552