Architecture Without Boundaries.

NBS-STYLE SPECIFICATION CLAUSE
SLIDING DOORSET: MFP18-H40 (MFP18 range)

Work section (CAWS): L20 - Doors / shutters / hatches
Clause reference: [insert project clause number]
Date generated: 15 October 2026

Structured for insertion into an NBS-style specification (General / Products / Execution). Confirm the work section reference against your project's NBS version.

Issued by:
     Minimal Frame Projects UK Ltd
     275–277 Ewell Road, Surbiton, Surrey, KT6 7AB
     Telephone 0207 550 6550   sales@minimalframeprojects.co.uk

1  GENERAL

1.1  Manufacturer and supply basis
     Manufacturer: Minimal Frame Projects UK Ltd, 275–277 Ewell Road, Surbiton, Surrey, KT6 7AB.
     Contact: 0207 550 6550   sales@minimalframeprojects.co.uk
     Supply basis: Official UK partner for the MFP18 range.

1.2  Product
     Manufacturer's product reference: MFP18-H40.
     System range: MFP18.
     Sightline: 18 mm.

1.3  Description of the work
     Supply and installation of one sliding doorset to MFP18-H40, forming an opening 6,000 mm wide by 2,500 mm high, with 3 sliding panels, complete with frame, glazing, track, threshold, ironmongery, fixings and drainage as required.

1.4  Standards
     Product standard: BS EN 14351-1 (windows and external pedestrian doorsets).
     Air permeability: BS EN 12207. Watertightness: BS EN 12208. Resistance to wind load: BS EN 12210.
     Thermal transmittance: BS EN ISO 10077-1/-2. Sound insulation: BS EN ISO 717-1.
     Burglar resistance: BS EN 1627. Mechanical durability: BS EN 12400.
     Weathertightness: BS 6375-1. Operation and strength: BS 6375-2.
     Survey and installation: BS 8213-4.
     Where a performance class is stated in paragraph 2.1, the classification framework is the corresponding standard listed above.
     Project-specific test evidence and certification for the final configuration is available on request.

1.5  Project design data
     Opening size: 6,000 mm wide by 2,500 mm high
     Number of sliding panels: 3
     Indicative panel module: 2,000 mm wide by 2,500 mm high (5.00 m²). For indication only: final panel sizes are set by the manufacturer's configuration drawings.

1.6  Basis of this specification and dimension check
     Every performance figure in paragraph 2.1 is reproduced from the manufacturer's published data for MFP18-H40. Figures the manufacturer does not publish are stated as not published.
     Dimension check:
     - Indicative panel module 5.00 m² is within the published maximum single-panel area for MFP18-H40 (18 m²).
     - Opening height 2,500 mm is within the published maximum for MFP18-H40 (6,000 mm).
     - The manufacturer publishes no maximum panel width figure for MFP18-H40. The proposed panel size must be confirmed by our technical team.
     - Panel sizes, weights and clear openings are to be confirmed by the manufacturer against the final configuration and a site survey before this clause is issued for tender.

2  PRODUCTS

2.1  Published technical data - MFP18-H40
     Thermal transmittance (referential): Down to 1.26 W/m²K
     Air permeability: Up to Class 4
     Resistance to wind load: Up to Class A3
     Water tightness: Up to Class 8A
     Acoustic performance: 37 (-1; -2; 0; -3) dB
     Resistance to repeated opening and closing: 37,500 cycles
     Determination of the operating forces of windows
     Commence opening: Class 1
     Commence closing: Class 1
     Engage hardware: Class 2
     Alarm and air conditioner sensors
     Electromagnetic lock
     Frame integrated handles
     Multipoint lock
     Wall integrated and weathertightness lock box system
     Concealed bearings
     18 mm perimeter view
     Smallest central mullion in the world: 18 mm Patented
     Security: RC2

2.2  Configuration and requirements
     Configuration: Mono / Bi / Tri / Quad + rails
     Optional requirements: none stated
     Finish: to be confirmed
     Additional requirements: none stated

2.3  Glass and glazing
     Glazing for this system as published in paragraph 2.1 (38 mm double).
     Final glass build-up, safety classification, coating and spacer to be confirmed by the manufacturer for this configuration.

2.4  Threshold and drainage
     Flush level-access thresholds and integrated drainage are available across the range.
     The threshold, track and drainage detail for this opening is to be confirmed by the manufacturer against the final configuration.

3  EXECUTION

3.1  Survey and setting out
     Dimensions to be confirmed by survey before manufacture. The dimensions stated in this clause record the design intent and do not replace a site survey.
     Setting out and tolerances in accordance with the manufacturer's installation instructions.

3.2  Installation
     Installation by MFP trained installation teams.
     Weathertightness to be maintained to the performance stated in paragraph 2.1.
     Thresholds, tracks and drainage set to the manufacturer's detail.

3.3  Handover and aftercare
     Demonstration of operation and handover of maintenance information on completion.
     Warranty cover, servicing and glass replacement as confirmed in the order documentation.

VERIFICATION
     Generated from the manufacturer-published data for MFP18-H40. Draft for the specifier to review: all figures, sizes and weights are to be confirmed with Minimal Frame Projects UK Ltd before this clause is issued for tender.
     Minimal Frame Projects UK Ltd   0207 550 6550   sales@minimalframeprojects.co.uk