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790 x 950mm Optional Extras Matching side windows
it ensures year-round comfort and energy efficiency
and a customisable layout
Premium Construction – 28mm interlocking logs with upgrade options to 34mm
Floor Included: 19mm thick floor provides a solid base for stability
Mercia XL Autovent Double Door 790 x 950mm Optional ExtrasThe Mercia XL Autovent is a high performance clamp on greenhouse vent opener designed to lift up to 5. 5kg (12lbs) with a maximum opening of 12". Measuring 11" in length, it ensures efficient ventilation without electricity, keeping your plants healthy. Built with a durable satin anodised silver finish or the new 2025 Forest Green, this autovent is fully serviceable, long lasting, and comes with a 2 year guarantee. Key Features Automatic vent opener
